diff --git a/app/Models/Document.php b/app/Models/Document.php
index b80bba1..4fced43 100644
--- a/app/Models/Document.php
+++ b/app/Models/Document.php
@@ -35,6 +35,11 @@ class Document extends Model implements Linkable
         return $this->type === 'upload';
     }
 
+    public function isDiagram(): bool
+    {
+        return $this->type === 'diagram';
+    }
+
     public function renderedMarkdown(): string
     {
         return (new CommonMarkConverter())->convert($this->content ?? '')->getContent();
diff --git a/app/Models/Organization.php b/app/Models/Organization.php
index 8433cb8..ad4e755 100644
--- a/app/Models/Organization.php
+++ b/app/Models/Organization.php
@@ -8,7 +8,7 @@ use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\SoftDeletes;
 use Illuminate\Support\Facades\Storage;
 
-#[Fillable(['name', 'slug', 'org_type', 'status', 'description', 'allowed_ip_ranges', 'logo_path', 'glpi_entity_id'])]
+#[Fillable(['name', 'slug', 'org_type', 'status', 'description', 'allowed_ip_ranges', 'logo_path', 'glpi_entity_id', 'technician_user_id', 'isp_name', 'public_ips'])]
 class Organization extends Model
 {
     use SoftDeletes;
@@ -17,6 +17,7 @@ class Organization extends Model
     {
         return [
             'allowed_ip_ranges' => 'array',
+            'public_ips' => 'array',
         ];
     }
 
@@ -86,4 +87,16 @@ class Organization extends Model
     {
         return $this->hasMany(Shortcut::class);
     }
+
+    public function technician()
+    {
+        return $this->belongsTo(User::class, 'technician_user_id');
+    }
+
+    public function providers()
+    {
+        return $this->belongsToMany(Provider::class, 'organization_provider')
+            ->withPivot('id', 'label')
+            ->withTimestamps();
+    }
 }
diff --git a/app/Models/Provider.php b/app/Models/Provider.php
new file mode 100644
index 0000000..a6a883c
--- /dev/null
+++ b/app/Models/Provider.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Attributes\Fillable;
+use Illuminate\Database\Eloquent\Casts\Attribute;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\SoftDeletes;
+use Illuminate\Support\Facades\Storage;
+
+#[Fillable(['name', 'logo_path', 'phone', 'email', 'website', 'notes'])]
+class Provider extends Model
+{
+    use SoftDeletes;
+
+    protected function logoUrl(): Attribute
+    {
+        return Attribute::get(
+            fn () => $this->logo_path ? Storage::disk('public')->url($this->logo_path) : asset('images/default-organization-logo.svg')
+        );
+    }
+
+    public function organizations()
+    {
+        return $this->belongsToMany(Organization::class, 'organization_provider')
+            ->withPivot('id', 'label')
+            ->withTimestamps();
+    }
+
+    public function logEntries()
+    {
+        return $this->hasMany(ProviderLogEntry::class)->orderByDesc('created_at');
+    }
+}
diff --git a/app/Models/ProviderLogEntry.php b/app/Models/ProviderLogEntry.php
new file mode 100644
index 0000000..a1c2425
--- /dev/null
+++ b/app/Models/ProviderLogEntry.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class ProviderLogEntry extends Model
+{
+    const UPDATED_AT = null;
+
+    const CATEGORIES = [
+        'contact' => 'Échange (mail / appel)',
+        'observation' => 'Observation',
+        'incident' => 'Incident',
+        'info' => 'Information générale',
+    ];
+
+    protected $guarded = [];
+
+    public function provider()
+    {
+        return $this->belongsTo(Provider::class);
+    }
+
+    public function creator()
+    {
+        return $this->belongsTo(User::class, 'created_by');
+    }
+
+    public function categoryLabel(): string
+    {
+        return self::CATEGORIES[$this->category] ?? $this->category;
+    }
+}
diff --git a/app/Services/SettingsRegistry.php b/app/Services/SettingsRegistry.php
index f62b47f..ad262c3 100644
--- a/app/Services/SettingsRegistry.php
+++ b/app/Services/SettingsRegistry.php
@@ -36,6 +36,9 @@ class SettingsRegistry
             'ONLYOFFICE_CALLBACK_BASE_URL' => ['config' => 'onlyoffice.callback_base_url', 'label' => 'URL de rappel (callback)'],
             'ONLYOFFICE_JWT_SECRET' => ['config' => 'onlyoffice.jwt_secret', 'label' => 'Secret JWT'],
         ],
+        'Draw.io' => [
+            'DRAWIO_URL' => ['config' => 'drawio.url', 'label' => "URL de l'éditeur draw.io"],
+        ],
         'GLPI' => [
             'GLPI_API_URL' => ['config' => 'glpi.api_url', 'label' => "URL de l'API"],
             'GLPI_APP_TOKEN' => ['config' => 'glpi.app_token', 'label' => 'Jeton application'],
diff --git a/config/drawio.php b/config/drawio.php
new file mode 100644
index 0000000..acf0003
--- /dev/null
+++ b/config/drawio.php
@@ -0,0 +1,9 @@
+<?php
+
+return [
+    // Base URL of the draw.io / diagrams.net editor to embed (embed mode).
+    // Defaults to the public diagrams.net service; point this to a self-hosted
+    // instance (e.g. the official jgraph/drawio Docker image) to keep diagram
+    // editing fully in-house.
+    'url' => env('DRAWIO_URL', 'https://embed.diagrams.net'),
+];
diff --git a/database/migrations/2026_08_21_090000_add_identity_card_fields_to_organizations_table.php b/database/migrations/2026_08_21_090000_add_identity_card_fields_to_organizations_table.php
new file mode 100644
index 0000000..b66c649
--- /dev/null
+++ b/database/migrations/2026_08_21_090000_add_identity_card_fields_to_organizations_table.php
@@ -0,0 +1,25 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('organizations', function (Blueprint $table) {
+            $table->foreignId('technician_user_id')->nullable()->after('glpi_entity_id')->constrained('users')->nullOnDelete();
+            $table->string('isp_name')->nullable()->after('technician_user_id');
+            $table->json('public_ips')->nullable()->after('isp_name');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('organizations', function (Blueprint $table) {
+            $table->dropConstrainedForeignId('technician_user_id');
+            $table->dropColumn(['isp_name', 'public_ips']);
+        });
+    }
+};
diff --git a/database/migrations/2026_08_21_090001_create_providers_table.php b/database/migrations/2026_08_21_090001_create_providers_table.php
new file mode 100644
index 0000000..9cff5fc
--- /dev/null
+++ b/database/migrations/2026_08_21_090001_create_providers_table.php
@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('providers', function (Blueprint $table) {
+            $table->id();
+            $table->string('name');
+            $table->string('logo_path')->nullable();
+            $table->string('phone')->nullable();
+            $table->string('email')->nullable();
+            $table->string('website')->nullable();
+            $table->text('notes')->nullable();
+            $table->timestamps();
+            $table->softDeletes();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('providers');
+    }
+};
diff --git a/database/migrations/2026_08_21_090002_create_organization_provider_table.php b/database/migrations/2026_08_21_090002_create_organization_provider_table.php
new file mode 100644
index 0000000..b5867c4
--- /dev/null
+++ b/database/migrations/2026_08_21_090002_create_organization_provider_table.php
@@ -0,0 +1,26 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('organization_provider', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('organization_id')->constrained()->cascadeOnDelete();
+            $table->foreignId('provider_id')->constrained()->cascadeOnDelete();
+            $table->string('label')->nullable();
+            $table->timestamps();
+
+            $table->unique(['organization_id', 'provider_id', 'label'], 'organization_provider_unique');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('organization_provider');
+    }
+};
diff --git a/database/migrations/2026_08_21_090003_create_provider_log_entries_table.php b/database/migrations/2026_08_21_090003_create_provider_log_entries_table.php
new file mode 100644
index 0000000..8e70926
--- /dev/null
+++ b/database/migrations/2026_08_21_090003_create_provider_log_entries_table.php
@@ -0,0 +1,25 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('provider_log_entries', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('provider_id')->constrained()->cascadeOnDelete();
+            $table->string('category');
+            $table->text('note');
+            $table->foreignId('created_by')->nullable()->constrained('users')->nullOnDelete();
+            $table->timestamp('created_at')->useCurrent();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('provider_log_entries');
+    }
+};
diff --git a/resources/views/components/documents/⚡diagram-editor.blade.php b/resources/views/components/documents/⚡diagram-editor.blade.php
new file mode 100644
index 0000000..2daf51d
--- /dev/null
+++ b/resources/views/components/documents/⚡diagram-editor.blade.php
@@ -0,0 +1,130 @@
+<?php
+
+use App\Models\Document;
+use App\Models\Organization;
+use Livewire\Component;
+
+new class extends Component
+{
+    public Organization $organization;
+    public Document $document;
+    public string $backRoute = 'organizations.documents.index';
+
+    public bool $renaming = false;
+    public string $name = '';
+
+    public function mount(Organization $organization, Document $document, string $backRoute = 'organizations.documents.index'): void
+    {
+        abort_unless($document->isDiagram(), 404);
+
+        $this->organization = $organization;
+        $this->document = $document;
+        $this->backRoute = $backRoute;
+        $this->name = $document->name;
+    }
+
+    public function rename(): void
+    {
+        $validated = $this->validate(['name' => 'required|string|max:255']);
+
+        $this->document->update($validated);
+        $this->renaming = false;
+    }
+
+    public function saveDiagram(string $xml): void
+    {
+        $contentChanged = $this->document->content !== $xml;
+
+        $this->document->update(['content' => $xml]);
+
+        if ($contentChanged) {
+            $this->document->increment('current_version');
+            $this->document->versions()->create([
+                'version' => $this->document->current_version,
+                'content' => $xml,
+                'created_by' => auth()->id(),
+            ]);
+        }
+    }
+};
+?>
+
+<div>
+    <p class="text-sm text-slate-500">{{ $organization->name }}</p>
+    <div class="mb-4 flex items-center justify-between">
+        @if ($renaming)
+            <form wire:submit="rename" class="flex items-center gap-2">
+                <input type="text" wire:model="name" autofocus
+                       class="rounded border-slate-300 text-2xl font-semibold shadow-sm focus:border-slate-500 focus:ring-slate-500">
+                <button type="submit" class="cursor-pointer rounded bg-slate-900 px-3 py-1.5 text-sm text-white hover:bg-slate-700">Enregistrer</button>
+                <button type="button" wire:click="$set('renaming', false)" class="cursor-pointer text-sm text-slate-500 hover:text-slate-900">Annuler</button>
+                @error('name') <p class="text-sm text-red-600">{{ $message }}</p> @enderror
+            </form>
+        @else
+            <button type="button" wire:click="$set('renaming', true)" class="group flex cursor-pointer items-center gap-2">
+                <h1 class="text-2xl font-semibold text-slate-900">{{ $document->name }}</h1>
+                <span class="text-sm text-slate-400 opacity-0 group-hover:opacity-100">Renommer</span>
+            </button>
+        @endif
+        <a href="{{ route($backRoute, $organization) }}" class="text-sm text-slate-500 hover:text-slate-900">Retour</a>
+    </div>
+
+    <div
+        wire:ignore
+        x-data="drawioEditor(@js($document->content ?? ''), @js(config('drawio.url')))"
+        x-init="init()"
+        class="w-full"
+        style="height: 78vh;"
+    >
+        <iframe x-ref="iframe" src="{{ config('drawio.url') }}?embed=1&proto=json&spin=1&noSaveBtn=0&saveAndExit=0&noExitBtn=1"
+                class="h-full w-full rounded border border-slate-200 bg-white"></iframe>
+    </div>
+
+    <p class="mt-2 text-xs text-slate-500" x-data="{ status: '' }" x-on:diagram-status.window="status = $event.detail" x-text="status"></p>
+
+    <div class="mt-8 max-w-5xl">
+        <x-documents.version-history :document="$document" />
+
+        <div class="mt-8">
+            <livewire:related-items.panel :organization="$organization" :item="$document" :key="'related-'.$document->id" />
+        </div>
+    </div>
+</div>
+
+@once
+    <script>
+        function drawioEditor(initialXml, baseUrl) {
+            return {
+                origin: null,
+                init() {
+                    this.origin = new URL(baseUrl, window.location.href).origin;
+                    window.addEventListener('message', (evt) => this.handleMessage(evt));
+                },
+                handleMessage(evt) {
+                    if (evt.origin !== this.origin) return;
+
+                    let msg;
+                    try {
+                        msg = JSON.parse(evt.data);
+                    } catch (e) {
+                        return;
+                    }
+
+                    if (msg.event === 'init') {
+                        this.post({ action: 'load', xml: initialXml, autosave: 0 });
+                    } else if (msg.event === 'save') {
+                        this.$wire.saveDiagram(msg.xml).then(() => {
+                            window.dispatchEvent(new CustomEvent('diagram-status', { detail: 'Enregistré à ' + new Date().toLocaleTimeString() }));
+                            this.post({ action: 'status', message: 'Enregistré', modified: false });
+                        });
+                    } else if (msg.event === 'exit') {
+                        this.post({ action: 'status', message: '', modified: false });
+                    }
+                },
+                post(payload) {
+                    this.$refs.iframe.contentWindow.postMessage(JSON.stringify(payload), this.origin);
+                },
+            };
+        }
+    </script>
+@endonce
diff --git a/resources/views/components/infrastructure/⚡index.blade.php b/resources/views/components/infrastructure/⚡index.blade.php
new file mode 100644
index 0000000..56f35b5
--- /dev/null
+++ b/resources/views/components/infrastructure/⚡index.blade.php
@@ -0,0 +1,135 @@
+<?php
+
+use App\Models\Document;
+use App\Models\Organization;
+use Livewire\Component;
+
+new class extends Component
+{
+    public Organization $organization;
+
+    public string $newDiagramName = '';
+    public bool $showNewDiagram = false;
+
+    public function createDiagram(): void
+    {
+        $this->validate(['newDiagramName' => 'required|string|max:255']);
+
+        $emptyDiagram = <<<'XML'
+        <mxfile host="app.diagrams.net">
+          <diagram name="Page-1">
+            <mxGraphModel dx="800" dy="600" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="850" pageHeight="1100" math="0" shadow="0">
+              <root>
+                <mxCell id="0" />
+                <mxCell id="1" parent="0" />
+              </root>
+            </mxGraphModel>
+          </diagram>
+        </mxfile>
+        XML;
+
+        $document = $this->organization->documents()->create([
+            'name' => $this->newDiagramName,
+            'type' => 'diagram',
+            'content' => $emptyDiagram,
+            'current_version' => 1,
+            'created_by' => auth()->id(),
+        ]);
+
+        $document->versions()->create([
+            'version' => 1,
+            'content' => $emptyDiagram,
+            'created_by' => auth()->id(),
+        ]);
+
+        $this->redirectRoute('organizations.infrastructure.edit', [$this->organization, $document], navigate: true);
+    }
+
+    public function delete(int $documentId): void
+    {
+        $document = $this->organization->documents()->where('type', 'diagram')->findOrFail($documentId);
+        $document->delete();
+
+        session()->flash('status', "Schéma « {$document->name} » supprimé.");
+    }
+
+    public function with(): array
+    {
+        return [
+            'diagrams' => $this->organization->documents()
+                ->where('type', 'diagram')
+                ->with('creator')
+                ->orderBy('name')
+                ->get(),
+        ];
+    }
+};
+?>
+
+<div>
+    <div class="mb-6 flex items-center justify-between">
+        <h1 class="text-2xl font-semibold text-slate-900">Infrastructure</h1>
+        <button type="button" wire:click="$toggle('showNewDiagram')"
+                class="cursor-pointer rounded bg-slate-900 px-4 py-2 text-sm font-medium text-white hover:bg-slate-700">
+            + Nouveau schéma
+        </button>
+    </div>
+
+    @if (session('status'))
+        <div class="mb-4 rounded border border-emerald-200 bg-emerald-50 px-3 py-2 text-sm text-emerald-700">
+            {{ session('status') }}
+        </div>
+    @endif
+
+    @if ($showNewDiagram)
+        <form wire:submit="createDiagram" class="mb-4 flex items-start gap-2 rounded border border-slate-200 bg-white p-3">
+            <div class="flex-1">
+                <input type="text" wire:model="newDiagramName" placeholder="Ex: Schéma réseau - Mairie, Schéma fonctionnel - SI RH"
+                       class="w-full rounded border-slate-300 text-sm shadow-sm focus:border-slate-500 focus:ring-slate-500">
+                @error('newDiagramName') <p class="mt-1 text-sm text-red-600">{{ $message }}</p> @enderror
+            </div>
+            <button type="submit" class="cursor-pointer rounded bg-slate-900 px-3 py-1.5 text-sm text-white hover:bg-slate-700">
+                Créer
+            </button>
+        </form>
+    @endif
+
+    <div class="overflow-hidden rounded border border-slate-200 bg-white">
+        <table class="min-w-full divide-y divide-slate-200 text-sm">
+            <thead class="bg-slate-50 text-left text-xs uppercase tracking-wide text-slate-500">
+                <tr>
+                    <th class="px-4 py-3">Nom</th>
+                    <th class="px-4 py-3">Créé par</th>
+                    <th class="px-4 py-3">Mis à jour</th>
+                    <th class="px-4 py-3"></th>
+                </tr>
+            </thead>
+            <tbody class="divide-y divide-slate-100">
+                @forelse ($diagrams as $diagram)
+                    <tr wire:key="diagram-{{ $diagram->id }}">
+                        <td class="px-4 py-3">
+                            <a href="{{ route('organizations.infrastructure.edit', [$organization, $diagram]) }}" class="font-medium text-slate-900 hover:underline">
+                                🗺️ {{ $diagram->name }}
+                            </a>
+                        </td>
+                        <td class="px-4 py-3 text-slate-600">{{ $diagram->creator?->name ?? '—' }}</td>
+                        <td class="px-4 py-3 text-slate-600">{{ $diagram->updated_at->diffForHumans() }}</td>
+                        <td class="px-4 py-3 text-right">
+                            <a href="{{ route('organizations.infrastructure.edit', [$organization, $diagram]) }}" class="text-slate-500 hover:text-slate-900">Ouvrir</a>
+                            <button type="button"
+                                    wire:click="delete({{ $diagram->id }})"
+                                    wire:confirm="Supprimer ce schéma ? Cette action est irréversible."
+                                    class="ml-3 cursor-pointer text-red-500 hover:text-red-700">
+                                Supprimer
+                            </button>
+                        </td>
+                    </tr>
+                @empty
+                    <tr>
+                        <td colspan="4" class="px-4 py-6 text-center text-slate-400">Aucun schéma pour le moment.</td>
+                    </tr>
+                @endforelse
+            </tbody>
+        </table>
+    </div>
+</div>
diff --git a/resources/views/components/layouts/app.blade.php b/resources/views/components/layouts/app.blade.php
index 065a29d..a3aad4f 100644
--- a/resources/views/components/layouts/app.blade.php
+++ b/resources/views/components/layouts/app.blade.php
@@ -19,6 +19,10 @@
                    class="block rounded px-3 py-2 hover:bg-slate-800 {{ request()->routeIs('organizations.*') ? 'bg-slate-800 text-white' : '' }}">
                     Organisations
                 </a>
+                <a href="{{ route('providers.index') }}"
+                   class="block rounded px-3 py-2 hover:bg-slate-800 {{ request()->routeIs('providers.*') ? 'bg-slate-800 text-white' : '' }}">
+                    Prestataires
+                </a>
 
                 @if ($currentOrganization)
                     @php
@@ -38,6 +42,10 @@
                            class="block rounded px-3 py-2 hover:bg-slate-800 {{ request()->routeIs('organizations.dashboard') ? 'bg-slate-800 text-white' : '' }}">
                             Tableau de bord
                         </a>
+                        <a href="{{ route('organizations.identity-card', $currentOrganization) }}"
+                           class="block rounded px-3 py-2 hover:bg-slate-800 {{ request()->routeIs('organizations.identity-card') ? 'bg-slate-800 text-white' : '' }}">
+                            Fiche d'identité
+                        </a>
                         <a href="{{ route('organizations.todos.index', $currentOrganization) }}"
                            class="block rounded px-3 py-2 hover:bg-slate-800 {{ request()->routeIs('organizations.todos.*') ? 'bg-slate-800 text-white' : '' }}">
                             ToDo
@@ -62,6 +70,10 @@
                            class="block rounded px-3 py-2 hover:bg-slate-800 {{ request()->routeIs('organizations.documents.*') ? 'bg-slate-800 text-white' : '' }}">
                             Documents
                         </a>
+                        <a href="{{ route('organizations.infrastructure.index', $currentOrganization) }}"
+                           class="block rounded px-3 py-2 hover:bg-slate-800 {{ request()->routeIs('organizations.infrastructure.*') ? 'bg-slate-800 text-white' : '' }}">
+                            Infrastructure
+                        </a>
                         <a href="{{ route('organizations.virtual-machines.index', $currentOrganization) }}"
                            class="block rounded px-3 py-2 hover:bg-slate-800 {{ request()->routeIs('organizations.virtual-machines.*') ? 'bg-slate-800 text-white' : '' }}">
                             Machines virtuelles
diff --git a/resources/views/components/organizations/⚡identity-card.blade.php b/resources/views/components/organizations/⚡identity-card.blade.php
new file mode 100644
index 0000000..fd52c39
--- /dev/null
+++ b/resources/views/components/organizations/⚡identity-card.blade.php
@@ -0,0 +1,198 @@
+<?php
+
+use App\Models\Organization;
+use App\Models\Provider;
+use App\Models\User;
+use Illuminate\Support\Facades\DB;
+use Livewire\Component;
+
+new class extends Component
+{
+    public Organization $organization;
+
+    public ?int $technicianUserId = null;
+    public string $ispName = '';
+    public string $publicIpsText = '';
+
+    public ?int $newProviderId = null;
+    public string $newProviderLabel = '';
+
+    public function mount(Organization $organization): void
+    {
+        $this->organization = $organization;
+        $this->technicianUserId = $organization->technician_user_id;
+        $this->ispName = $organization->isp_name ?? '';
+        $this->publicIpsText = implode("\n", $organization->public_ips ?? []);
+    }
+
+    public function save(): void
+    {
+        $validated = $this->validate([
+            'technicianUserId' => 'nullable|exists:users,id',
+            'ispName' => 'nullable|string|max:255',
+            'publicIpsText' => 'nullable|string',
+        ]);
+
+        $ips = collect(preg_split('/[\s,]+/', (string) $validated['publicIpsText'], -1, PREG_SPLIT_NO_EMPTY))
+            ->unique()
+            ->values();
+
+        if ($ips->contains(fn ($ip) => filter_var($ip, FILTER_VALIDATE_IP) === false)) {
+            $this->addError('publicIpsText', 'Une ou plusieurs adresses IP sont invalides.');
+
+            return;
+        }
+
+        $this->organization->update([
+            'technician_user_id' => $validated['technicianUserId'],
+            'isp_name' => $validated['ispName'] !== '' ? $validated['ispName'] : null,
+            'public_ips' => $ips->all(),
+        ]);
+
+        session()->flash('status', "Fiche d'identité mise à jour.");
+    }
+
+    public function addProvider(): void
+    {
+        $validated = $this->validate([
+            'newProviderId' => 'required|exists:providers,id',
+            'newProviderLabel' => 'nullable|string|max:255',
+        ]);
+
+        $label = $validated['newProviderLabel'] ?: null;
+
+        $alreadyLinked = $this->organization->providers()
+            ->wherePivot('provider_id', $validated['newProviderId'])
+            ->wherePivot('label', '=', $label)
+            ->exists();
+
+        if ($alreadyLinked) {
+            $this->addError('newProviderId', 'Ce prestataire est déjà lié avec ce libellé.');
+
+            return;
+        }
+
+        $this->organization->providers()->attach($validated['newProviderId'], ['label' => $label]);
+
+        $this->reset(['newProviderId', 'newProviderLabel']);
+    }
+
+    public function removeProvider(int $pivotId): void
+    {
+        DB::table('organization_provider')
+            ->where('id', $pivotId)
+            ->where('organization_id', $this->organization->id)
+            ->delete();
+    }
+
+    public function with(): array
+    {
+        return [
+            'technicians' => User::role(['Administrateur', 'Technicien'])->orderBy('name')->get(),
+            'availableProviders' => Provider::orderBy('name')->get(),
+            'providers' => $this->organization->providers()->orderBy('name')->get(),
+        ];
+    }
+};
+?>
+
+<div class="max-w-3xl">
+    <p class="text-sm text-slate-500">{{ $organization->name }}</p>
+    <h1 class="mb-6 text-2xl font-semibold text-slate-900">Fiche d'identité informatique</h1>
+
+    @if (session('status'))
+        <div class="mb-4 rounded border border-emerald-200 bg-emerald-50 px-3 py-2 text-sm text-emerald-700">
+            {{ session('status') }}
+        </div>
+    @endif
+
+    <form wire:submit="save" class="space-y-4 rounded border border-slate-200 bg-white p-6">
+        <div>
+            <label class="block text-sm font-medium text-slate-700">Technicien gestionnaire</label>
+            <select wire:model="technicianUserId"
+                    class="mt-1 w-full rounded border-slate-300 text-sm shadow-sm focus:border-slate-500 focus:ring-slate-500">
+                <option value="">—</option>
+                @foreach ($technicians as $technician)
+                    <option value="{{ $technician->id }}">{{ $technician->name }}</option>
+                @endforeach
+            </select>
+            @error('technicianUserId') <p class="mt-1 text-sm text-red-600">{{ $message }}</p> @enderror
+        </div>
+
+        <div>
+            <label class="block text-sm font-medium text-slate-700">Fournisseur d'accès internet</label>
+            <input type="text" wire:model="ispName" placeholder="Orange, Free Pro, Telindus..."
+                   class="mt-1 w-full rounded border-slate-300 text-sm shadow-sm focus:border-slate-500 focus:ring-slate-500">
+            @error('ispName') <p class="mt-1 text-sm text-red-600">{{ $message }}</p> @enderror
+        </div>
+
+        <div>
+            <label class="block text-sm font-medium text-slate-700">IP(s) publiques</label>
+            <textarea wire:model="publicIpsText" rows="3" placeholder="Une adresse IP par ligne"
+                      class="mt-1 w-full rounded border-slate-300 font-mono text-sm shadow-sm focus:border-slate-500 focus:ring-slate-500"></textarea>
+            @error('publicIpsText') <p class="mt-1 text-sm text-red-600">{{ $message }}</p> @enderror
+        </div>
+
+        <div class="pt-2">
+            <button type="submit"
+                    class="cursor-pointer rounded bg-slate-900 px-4 py-2 text-sm font-medium text-white hover:bg-slate-700">
+                Enregistrer
+            </button>
+        </div>
+    </form>
+
+    <div class="mt-8 rounded border border-slate-200 bg-white p-6">
+        <h2 class="mb-3 text-sm font-semibold uppercase tracking-wide text-slate-500">Prestataires</h2>
+
+        <ul class="mb-4 divide-y divide-slate-100">
+            @forelse ($providers as $provider)
+                <li wire:key="provider-{{ $provider->pivot->id }}" class="flex items-center gap-3 py-2 text-sm">
+                    <img src="{{ $provider->logo_url }}" alt="Logo {{ $provider->name }}"
+                         class="h-6 w-6 shrink-0 rounded border border-slate-200 bg-white object-contain p-0.5">
+                    <div class="flex-1">
+                        <a href="{{ route('providers.edit', $provider) }}" class="font-medium text-slate-900 hover:underline">
+                            {{ $provider->name }}
+                        </a>
+                        @if ($provider->pivot->label)
+                            <span class="text-xs text-slate-500">&middot; {{ $provider->pivot->label }}</span>
+                        @endif
+                    </div>
+                    <button type="button" wire:click="removeProvider({{ $provider->pivot->id }})"
+                            wire:confirm="Retirer ce prestataire ?"
+                            class="cursor-pointer shrink-0 text-xs text-red-500 hover:text-red-700">
+                        Retirer
+                    </button>
+                </li>
+            @empty
+                <li class="py-2 text-sm text-slate-400">Aucun prestataire lié.</li>
+            @endforelse
+        </ul>
+
+        <form wire:submit="addProvider" class="flex flex-wrap items-start gap-2 rounded border border-slate-100 bg-slate-50 p-3">
+            <div class="flex-1">
+                <select wire:model="newProviderId"
+                        class="w-full rounded border-slate-300 text-sm shadow-sm focus:border-slate-500 focus:ring-slate-500">
+                    <option value="">Sélectionner un prestataire...</option>
+                    @foreach ($availableProviders as $availableProvider)
+                        <option value="{{ $availableProvider->id }}">{{ $availableProvider->name }}</option>
+                    @endforeach
+                </select>
+                @error('newProviderId') <p class="mt-1 text-sm text-red-600">{{ $message }}</p> @enderror
+            </div>
+            <div class="flex-1">
+                <input type="text" wire:model="newProviderLabel" placeholder="Libellé (ex: Téléphonie, Maintenance copieurs)"
+                       class="w-full rounded border-slate-300 text-sm shadow-sm focus:border-slate-500 focus:ring-slate-500">
+            </div>
+            <button type="submit" class="cursor-pointer rounded bg-slate-900 px-3 py-1.5 text-sm text-white hover:bg-slate-700">
+                Ajouter
+            </button>
+        </form>
+
+        @if ($availableProviders->isEmpty())
+            <p class="mt-3 text-xs text-slate-500">
+                Aucun prestataire n'existe encore.
+                <a href="{{ route('providers.create') }}" class="underline hover:text-slate-900">En créer un</a>.
+            </p>
+        @endif
+    </div>
+</div>
diff --git a/resources/views/components/providers/⚡form.blade.php b/resources/views/components/providers/⚡form.blade.php
new file mode 100644
index 0000000..0d6ca00
--- /dev/null
+++ b/resources/views/components/providers/⚡form.blade.php
@@ -0,0 +1,217 @@
+<?php
+
+use App\Models\Provider;
+use App\Models\ProviderLogEntry;
+use Illuminate\Support\Facades\Storage;
+use Livewire\Component;
+use Livewire\WithFileUploads;
+
+new class extends Component
+{
+    use WithFileUploads;
+
+    public ?Provider $provider = null;
+
+    public string $name = '';
+    public string $phone = '';
+    public string $email = '';
+    public string $website = '';
+    public string $notes = '';
+
+    public $logo = null;
+
+    public string $newLogCategory = 'contact';
+    public string $newLogNote = '';
+
+    public function mount(?Provider $provider = null): void
+    {
+        if ($provider?->exists) {
+            $this->provider = $provider;
+            $this->name = $provider->name;
+            $this->phone = $provider->phone ?? '';
+            $this->email = $provider->email ?? '';
+            $this->website = $provider->website ?? '';
+            $this->notes = $provider->notes ?? '';
+        }
+    }
+
+    public function save(): void
+    {
+        $validated = $this->validate([
+            'name' => 'required|string|max:255',
+            'phone' => 'nullable|string|max:50',
+            'email' => 'nullable|email|max:255',
+            'website' => 'nullable|string|max:255',
+            'notes' => 'nullable|string',
+            'logo' => 'nullable|image|max:2048',
+        ]);
+
+        unset($validated['logo']);
+
+        foreach (['phone', 'email', 'website', 'notes'] as $field) {
+            $validated[$field] = $validated[$field] !== '' ? $validated[$field] : null;
+        }
+
+        if ($this->provider?->exists) {
+            $this->provider->update($validated);
+        } else {
+            $this->provider = Provider::create($validated);
+        }
+
+        if ($this->logo) {
+            if ($this->provider->logo_path) {
+                Storage::disk('public')->delete($this->provider->logo_path);
+            }
+
+            $path = $this->logo->store("providers/{$this->provider->id}", 'public');
+            $this->provider->update(['logo_path' => $path]);
+        }
+
+        session()->flash('status', "Prestataire « {$this->provider->name} » enregistré.");
+
+        $this->redirectRoute('providers.index', navigate: true);
+    }
+
+    public function addLogEntry(): void
+    {
+        $this->validate([
+            'newLogCategory' => 'required|in:'.implode(',', array_keys(ProviderLogEntry::CATEGORIES)),
+            'newLogNote' => 'required|string',
+        ]);
+
+        $this->provider->logEntries()->create([
+            'category' => $this->newLogCategory,
+            'note' => $this->newLogNote,
+            'created_by' => auth()->id(),
+        ]);
+
+        $this->newLogNote = '';
+    }
+
+    public function deleteLogEntry(int $entryId): void
+    {
+        $this->provider->logEntries()->findOrFail($entryId)->delete();
+    }
+
+    public function with(): array
+    {
+        return [
+            'logEntries' => $this->provider?->exists ? $this->provider->logEntries()->with('creator')->limit(30)->get() : collect(),
+            'categories' => ProviderLogEntry::CATEGORIES,
+        ];
+    }
+};
+?>
+
+<div class="max-w-2xl">
+    <h1 class="mb-6 text-2xl font-semibold text-slate-900">
+        {{ $provider?->exists ? 'Modifier le prestataire' : 'Nouveau prestataire' }}
+    </h1>
+
+    @if (session('status'))
+        <div class="mb-4 rounded border border-emerald-200 bg-emerald-50 px-3 py-2 text-sm text-emerald-700">
+            {{ session('status') }}
+        </div>
+    @endif
+
+    <form wire:submit="save" class="space-y-4 rounded border border-slate-200 bg-white p-6">
+        <div>
+            <label class="block text-sm font-medium text-slate-700">Logo</label>
+            <div class="mt-1 flex items-center gap-4">
+                <img src="{{ $logo ? $logo->temporaryUrl() : ($provider?->logo_url ?? asset('images/default-organization-logo.svg')) }}"
+                     class="h-16 w-16 rounded border border-slate-200 object-contain p-1" alt="Logo">
+                <input type="file" wire:model="logo" accept="image/*"
+                       class="block text-sm text-slate-600 file:mr-3 file:rounded file:border-0 file:bg-slate-100 file:px-3 file:py-1.5 file:text-sm file:font-medium file:text-slate-700 hover:file:bg-slate-200">
+            </div>
+            @error('logo') <p class="mt-1 text-sm text-red-600">{{ $message }}</p> @enderror
+        </div>
+
+        <div>
+            <label class="block text-sm font-medium text-slate-700">Nom</label>
+            <input type="text" wire:model="name"
+                   class="mt-1 w-full rounded border-slate-300 text-sm shadow-sm focus:border-slate-500 focus:ring-slate-500">
+            @error('name') <p class="mt-1 text-sm text-red-600">{{ $message }}</p> @enderror
+        </div>
+
+        <div class="grid grid-cols-2 gap-4">
+            <div>
+                <label class="block text-sm font-medium text-slate-700">Téléphone</label>
+                <input type="text" wire:model="phone"
+                       class="mt-1 w-full rounded border-slate-300 text-sm shadow-sm focus:border-slate-500 focus:ring-slate-500">
+            </div>
+            <div>
+                <label class="block text-sm font-medium text-slate-700">Email</label>
+                <input type="email" wire:model="email"
+                       class="mt-1 w-full rounded border-slate-300 text-sm shadow-sm focus:border-slate-500 focus:ring-slate-500">
+                @error('email') <p class="mt-1 text-sm text-red-600">{{ $message }}</p> @enderror
+            </div>
+        </div>
+
+        <div>
+            <label class="block text-sm font-medium text-slate-700">Site web</label>
+            <input type="text" wire:model="website" placeholder="https://..."
+                   class="mt-1 w-full rounded border-slate-300 text-sm shadow-sm focus:border-slate-500 focus:ring-slate-500">
+        </div>
+
+        <div>
+            <label class="block text-sm font-medium text-slate-700">Notes</label>
+            <textarea wire:model="notes" rows="3"
+                      class="mt-1 w-full rounded border-slate-300 text-sm shadow-sm focus:border-slate-500 focus:ring-slate-500"></textarea>
+        </div>
+
+        <div class="flex items-center gap-3 pt-2">
+            <button type="submit"
+                    class="cursor-pointer rounded bg-slate-900 px-4 py-2 text-sm font-medium text-white hover:bg-slate-700">
+                Enregistrer
+            </button>
+            <a href="{{ route('providers.index') }}" class="text-sm text-slate-500 hover:text-slate-900">Annuler</a>
+        </div>
+    </form>
+
+    @if ($provider?->exists)
+        <div class="mt-8 rounded border border-slate-200 bg-white p-6">
+            <h2 class="mb-3 text-sm font-semibold uppercase tracking-wide text-slate-500">Journal de suivi</h2>
+
+            <form wire:submit="addLogEntry" class="mb-4 space-y-2 rounded border border-slate-100 bg-slate-50 p-3">
+                <div class="flex items-start gap-2">
+                    <select wire:model="newLogCategory" class="rounded border-slate-300 text-sm shadow-sm focus:border-slate-500 focus:ring-slate-500">
+                        @foreach ($categories as $value => $label)
+                            <option value="{{ $value }}">{{ $label }}</option>
+                        @endforeach
+                    </select>
+                    <textarea wire:model="newLogNote" rows="2" placeholder="Ex: mail envoyé le 21/08 pour demander des précisions..."
+                              class="flex-1 rounded border-slate-300 text-sm shadow-sm focus:border-slate-500 focus:ring-slate-500"></textarea>
+                    <button type="submit" class="cursor-pointer rounded bg-slate-900 px-3 py-1.5 text-sm text-white hover:bg-slate-700">Ajouter</button>
+                </div>
+                @error('newLogNote') <p class="text-sm text-red-600">{{ $message }}</p> @enderror
+            </form>
+
+            <div class="space-y-3">
+                @forelse ($logEntries as $entry)
+                    <div wire:key="log-{{ $entry->id }}" class="flex items-start justify-between gap-4 border-b border-slate-100 pb-3 last:border-0 last:pb-0">
+                        <div>
+                            <span class="mb-1 inline-block rounded-full px-2 py-0.5 text-xs font-medium
+                                {{ match($entry->category) {
+                                    'contact' => 'bg-blue-100 text-blue-700',
+                                    'observation' => 'bg-slate-100 text-slate-600',
+                                    'incident' => 'bg-red-100 text-red-700',
+                                    default => 'bg-slate-100 text-slate-600',
+                                } }}">
+                                {{ $entry->categoryLabel() }}
+                            </span>
+                            <p class="whitespace-pre-line text-sm text-slate-900">{{ $entry->note }}</p>
+                            <p class="mt-1 text-xs text-slate-500">{{ $entry->creator?->name ?? 'système' }} &middot; {{ $entry->created_at->diffForHumans() }}</p>
+                        </div>
+                        <button type="button" wire:click="deleteLogEntry({{ $entry->id }})"
+                                wire:confirm="Supprimer cette entrée ?"
+                                class="cursor-pointer shrink-0 text-xs text-red-500 hover:text-red-700">
+                            Supprimer
+                        </button>
+                    </div>
+                @empty
+                    <p class="text-sm text-slate-400">Aucune entrée dans le journal pour le moment.</p>
+                @endforelse
+            </div>
+        </div>
+    @endif
+</div>
diff --git a/resources/views/components/providers/⚡index.blade.php b/resources/views/components/providers/⚡index.blade.php
new file mode 100644
index 0000000..f6f59e3
--- /dev/null
+++ b/resources/views/components/providers/⚡index.blade.php
@@ -0,0 +1,100 @@
+<?php
+
+use App\Models\Provider;
+use Livewire\Attributes\Url;
+use Livewire\Component;
+use Livewire\WithPagination;
+
+new class extends Component
+{
+    use WithPagination;
+
+    #[Url]
+    public string $search = '';
+
+    public function delete(int $providerId): void
+    {
+        $provider = Provider::findOrFail($providerId);
+        $provider->delete();
+
+        session()->flash('status', "Prestataire « {$provider->name} » supprimé.");
+    }
+
+    public function with(): array
+    {
+        return [
+            'providers' => Provider::query()
+                ->when($this->search, fn ($query) => $query->where('name', 'like', "%{$this->search}%"))
+                ->orderBy('name')
+                ->paginate(15),
+        ];
+    }
+};
+?>
+
+<div>
+    <div class="mb-6 flex items-center justify-between">
+        <h1 class="text-2xl font-semibold text-slate-900">Prestataires</h1>
+        <a href="{{ route('providers.create') }}"
+           class="rounded bg-slate-900 px-4 py-2 text-sm font-medium text-white hover:bg-slate-700">
+            + Nouveau prestataire
+        </a>
+    </div>
+
+    @if (session('status'))
+        <div class="mb-4 rounded border border-emerald-200 bg-emerald-50 px-3 py-2 text-sm text-emerald-700">
+            {{ session('status') }}
+        </div>
+    @endif
+
+    <input type="text" wire:model.live.debounce.300ms="search" placeholder="Filtrer par nom..."
+           class="mb-4 w-full max-w-sm rounded border-slate-300 text-sm shadow-sm focus:border-slate-500 focus:ring-slate-500">
+
+    <div class="overflow-hidden rounded border border-slate-200 bg-white">
+        <table class="min-w-full divide-y divide-slate-200 text-sm">
+            <thead class="bg-slate-50 text-left text-xs uppercase tracking-wide text-slate-500">
+                <tr>
+                    <th class="px-4 py-3"></th>
+                    <th class="px-4 py-3">Nom</th>
+                    <th class="px-4 py-3">Téléphone</th>
+                    <th class="px-4 py-3">Email</th>
+                    <th class="px-4 py-3"></th>
+                </tr>
+            </thead>
+            <tbody class="divide-y divide-slate-100">
+                @forelse ($providers as $provider)
+                    <tr wire:key="provider-{{ $provider->id }}">
+                        <td class="px-4 py-3">
+                            <img src="{{ $provider->logo_url }}" alt="Logo {{ $provider->name }}"
+                                 class="h-8 w-8 rounded border border-slate-200 bg-white object-contain p-0.5">
+                        </td>
+                        <td class="px-4 py-3">
+                            <a href="{{ route('providers.edit', $provider) }}" class="font-medium text-slate-900 hover:underline">
+                                {{ $provider->name }}
+                            </a>
+                        </td>
+                        <td class="px-4 py-3 text-slate-600">{{ $provider->phone ?? '—' }}</td>
+                        <td class="px-4 py-3 text-slate-600">{{ $provider->email ?? '—' }}</td>
+                        <td class="px-4 py-3 text-right">
+                            <a href="{{ route('providers.edit', $provider) }}" class="text-slate-500 hover:text-slate-900">Modifier</a>
+                            <button type="button"
+                                    wire:click="delete({{ $provider->id }})"
+                                    wire:confirm="Supprimer ce prestataire ? Cette action est irréversible."
+                                    class="ml-3 cursor-pointer text-red-500 hover:text-red-700">
+                                Supprimer
+                            </button>
+                        </td>
+                    </tr>
+                @empty
+                    <tr>
+                        <td colspan="5" class="px-4 py-6 text-center text-slate-400">Aucun prestataire pour le moment.</td>
+                    </tr>
+                @endforelse
+            </tbody>
+        </table>
+    </div>
+
+    <div class="mt-4">
+        {{ $providers->links() }}
+    </div>
+</div>
diff --git a/resources/views/documents/edit.blade.php b/resources/views/documents/edit.blade.php
index f148743..5901cef 100644
--- a/resources/views/documents/edit.blade.php
+++ b/resources/views/documents/edit.blade.php
@@ -5,6 +5,8 @@
         <livewire:documents.markdown-editor :organization="$organization" :document="$document" />
     @elseif ($document->isUpload())
         <livewire:documents.upload-viewer :organization="$organization" :document="$document" />
+    @elseif ($document->isDiagram())
+        <livewire:documents.diagram-editor :organization="$organization" :document="$document" />
     @else
         <livewire:documents.form :organization="$organization" :document="$document" />
     @endif
diff --git a/resources/views/infrastructure/edit.blade.php b/resources/views/infrastructure/edit.blade.php
new file mode 100644
index 0000000..3faa34c
--- /dev/null
+++ b/resources/views/infrastructure/edit.blade.php
@@ -0,0 +1,3 @@
+<x-layouts.app :title="$document->name">
+    <livewire:documents.diagram-editor :organization="$organization" :document="$document" back-route="organizations.infrastructure.index" />
+</x-layouts.app>
diff --git a/resources/views/infrastructure/index.blade.php b/resources/views/infrastructure/index.blade.php
new file mode 100644
index 0000000..6bf3f97
--- /dev/null
+++ b/resources/views/infrastructure/index.blade.php
@@ -0,0 +1,3 @@
+<x-layouts.app title="Infrastructure">
+    <livewire:infrastructure.index :organization="$organization" />
+</x-layouts.app>
diff --git a/resources/views/organizations/identity-card.blade.php b/resources/views/organizations/identity-card.blade.php
new file mode 100644
index 0000000..f99ac3e
--- /dev/null
+++ b/resources/views/organizations/identity-card.blade.php
@@ -0,0 +1,3 @@
+<x-layouts.app title="Fiche d'identité informatique">
+    <livewire:organizations.identity-card :organization="$organization" />
+</x-layouts.app>
diff --git a/resources/views/providers/create.blade.php b/resources/views/providers/create.blade.php
new file mode 100644
index 0000000..13767a0
--- /dev/null
+++ b/resources/views/providers/create.blade.php
@@ -0,0 +1,3 @@
+<x-layouts.app title="Nouveau prestataire">
+    <livewire:providers.form />
+</x-layouts.app>
diff --git a/resources/views/providers/edit.blade.php b/resources/views/providers/edit.blade.php
new file mode 100644
index 0000000..a3fb863
--- /dev/null
+++ b/resources/views/providers/edit.blade.php
@@ -0,0 +1,3 @@
+<x-layouts.app :title="$provider->name">
+    <livewire:providers.form :provider="$provider" />
+</x-layouts.app>
diff --git a/resources/views/providers/index.blade.php b/resources/views/providers/index.blade.php
new file mode 100644
index 0000000..aba35da
--- /dev/null
+++ b/resources/views/providers/index.blade.php
@@ -0,0 +1,3 @@
+<x-layouts.app title="Prestataires">
+    <livewire:providers.index />
+</x-layouts.app>
diff --git a/routes/web.php b/routes/web.php
index 3ea56d3..e03f75e 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -8,6 +8,7 @@ use App\Models\FlexibleAssetType;
 use App\Models\Location;
 use App\Models\Organization;
 use App\Models\Password;
+use App\Models\Provider;
 use App\Models\Shortcut;
 use App\Models\Todo;
 use App\Models\User;
@@ -23,7 +24,14 @@ Route::middleware(['auth'])->group(function () {
     Route::get('/organizations', fn () => view('organizations.index'))->name('organizations.index');
     Route::get('/organizations/create', fn () => view('organizations.create'))->name('organizations.create');
     Route::get('/organizations/{organization}/edit', fn (Organization $organization) => view('organizations.edit', ['organization' => $organization]))->name('organizations.edit');
+
+    Route::prefix('/providers')->name('providers.')->group(function () {
+        Route::get('/', fn () => view('providers.index'))->name('index');
+        Route::get('/create', fn () => view('providers.create'))->name('create');
+        Route::get('/{provider}/edit', fn (Provider $provider) => view('providers.edit', ['provider' => $provider]))->name('edit');
+    });
     Route::get('/organizations/{organization}/dashboard', fn (Organization $organization) => view('organizations.dashboard', ['organization' => $organization]))->name('organizations.dashboard');
+    Route::get('/organizations/{organization}/identity-card', fn (Organization $organization) => view('organizations.identity-card', ['organization' => $organization]))->name('organizations.identity-card');
 
     Route::prefix('/organizations/{organization}/passwords')->name('organizations.passwords.')->group(function () {
         Route::get('/', fn (Organization $organization) => view('passwords.index', ['organization' => $organization]))->name('index');
@@ -74,6 +82,14 @@ Route::middleware(['auth'])->group(function () {
         Route::get('/{document}/download', DocumentDownloadController::class)->name('download');
     });
 
+    Route::prefix('/organizations/{organization}/infrastructure')->name('organizations.infrastructure.')->group(function () {
+        Route::get('/', fn (Organization $organization) => view('infrastructure.index', ['organization' => $organization]))->name('index');
+        Route::get('/{document}/edit', fn (Organization $organization, Document $document) => view('infrastructure.edit', [
+            'organization' => $organization,
+            'document' => $document,
+        ]))->name('edit');
+    });
+
     Route::prefix('/organizations/{organization}/virtual-machines')->name('organizations.virtual-machines.')->group(function () {
         Route::get('/', fn (Organization $organization) => view('virtual-machines.index', ['organization' => $organization]))->name('index');
         Route::get('/create', fn (Organization $organization) => view('virtual-machines.create', ['organization' => $organization]))->name('create');
diff --git a/tests/Feature/InfrastructureTest.php b/tests/Feature/InfrastructureTest.php
new file mode 100644
index 0000000..8026d66
--- /dev/null
+++ b/tests/Feature/InfrastructureTest.php
@@ -0,0 +1,75 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\Organization;
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Livewire\Livewire;
+use Tests\TestCase;
+
+class InfrastructureTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_infrastructure_index_page_renders_for_an_authenticated_user(): void
+    {
+        $user = User::factory()->create();
+        $org = Organization::create(['name' => 'Test Commune', 'slug' => 'test-commune', 'org_type' => 'client']);
+
+        $response = $this->actingAs($user)->get(route('organizations.infrastructure.index', $org));
+
+        $response->assertOk();
+        $response->assertSee('Infrastructure');
+    }
+
+    public function test_can_create_a_diagram_and_it_opens_in_the_editor(): void
+    {
+        $user = User::factory()->create();
+        $org = Organization::create(['name' => 'Test Commune', 'slug' => 'test-commune', 'org_type' => 'client']);
+
+        $this->actingAs($user);
+
+        Livewire::test('infrastructure.index', ['organization' => $org])
+            ->set('newDiagramName', 'Schéma réseau - Mairie')
+            ->call('createDiagram')
+            ->assertHasNoErrors();
+
+        $this->assertDatabaseHas('documents', [
+            'organization_id' => $org->id,
+            'name' => 'Schéma réseau - Mairie',
+            'type' => 'diagram',
+        ]);
+
+        $document = $org->documents()->where('type', 'diagram')->firstOrFail();
+
+        $response = $this->get(route('organizations.infrastructure.edit', [$org, $document]));
+        $response->assertOk();
+        $response->assertSee('Schéma réseau - Mairie');
+    }
+
+    public function test_saving_a_diagram_creates_a_new_version_only_when_content_changed(): void
+    {
+        $user = User::factory()->create();
+        $org = Organization::create(['name' => 'Test Commune', 'slug' => 'test-commune', 'org_type' => 'client']);
+
+        $document = $org->documents()->create([
+            'name' => 'Schéma test',
+            'type' => 'diagram',
+            'content' => '<mxfile>old</mxfile>',
+            'current_version' => 1,
+            'created_by' => $user->id,
+        ]);
+        $document->versions()->create(['version' => 1, 'content' => '<mxfile>old</mxfile>', 'created_by' => $user->id]);
+
+        $this->actingAs($user);
+
+        Livewire::test('documents.diagram-editor', ['organization' => $org, 'document' => $document])
+            ->call('saveDiagram', '<mxfile>new</mxfile>');
+
+        $document->refresh();
+        $this->assertSame('<mxfile>new</mxfile>', $document->content);
+        $this->assertSame(2, $document->current_version);
+        $this->assertCount(2, $document->versions);
+    }
+}
diff --git a/tests/Feature/OrganizationIdentityCardTest.php b/tests/Feature/OrganizationIdentityCardTest.php
new file mode 100644
index 0000000..b32a1e6
--- /dev/null
+++ b/tests/Feature/OrganizationIdentityCardTest.php
@@ -0,0 +1,157 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\Organization;
+use App\Models\Provider;
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Livewire\Livewire;
+use Tests\TestCase;
+
+class OrganizationIdentityCardTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_identity_card_page_renders_for_an_authenticated_user(): void
+    {
+        $this->seed(\Database\Seeders\RolesAndPermissionsSeeder::class);
+
+        $user = User::factory()->create();
+        $org = Organization::create(['name' => 'Test Commune', 'slug' => 'test-commune', 'org_type' => 'client']);
+
+        $response = $this->actingAs($user)->get(route('organizations.identity-card', $org));
+
+        $response->assertOk();
+        $response->assertSee("Fiche d'identité informatique");
+    }
+
+    public function test_can_save_identity_fields_and_link_a_provider(): void
+    {
+        $this->seed(\Database\Seeders\RolesAndPermissionsSeeder::class);
+
+        $user = User::factory()->create();
+        $technician = User::factory()->create();
+        $technician->assignRole('Technicien');
+
+        $org = Organization::create(['name' => 'Test Commune', 'slug' => 'test-commune', 'org_type' => 'client']);
+        $provider = Provider::create(['name' => 'Orange Pro']);
+
+        $this->actingAs($user);
+
+        Livewire::test('organizations.identity-card', ['organization' => $org])
+            ->set('technicianUserId', $technician->id)
+            ->set('ispName', 'Orange Pro')
+            ->set('publicIpsText', "203.0.113.10\n203.0.113.11")
+            ->call('save')
+            ->assertHasNoErrors();
+
+        $org->refresh();
+        $this->assertSame($technician->id, $org->technician_user_id);
+        $this->assertSame('Orange Pro', $org->isp_name);
+        $this->assertSame(['203.0.113.10', '203.0.113.11'], $org->public_ips);
+
+        Livewire::test('organizations.identity-card', ['organization' => $org])
+            ->set('newProviderId', $provider->id)
+            ->set('newProviderLabel', 'Téléphonie')
+            ->call('addProvider')
+            ->assertHasNoErrors();
+
+        $this->assertCount(1, $org->providers()->get());
+
+        $pivotId = $org->providers()->first()->pivot->id;
+
+        Livewire::test('organizations.identity-card', ['organization' => $org])
+            ->call('removeProvider', $pivotId);
+
+        $this->assertCount(0, $org->providers()->get());
+    }
+
+    public function test_clearing_the_technician_select_nulls_it_out(): void
+    {
+        $this->seed(\Database\Seeders\RolesAndPermissionsSeeder::class);
+
+        $user = User::factory()->create();
+        $technician = User::factory()->create();
+        $technician->assignRole('Technicien');
+
+        $org = Organization::create([
+            'name' => 'Test Commune',
+            'slug' => 'test-commune',
+            'org_type' => 'client',
+            'technician_user_id' => $technician->id,
+        ]);
+
+        $this->actingAs($user);
+
+        Livewire::test('organizations.identity-card', ['organization' => $org])
+            ->assertSet('technicianUserId', $technician->id)
+            ->set('technicianUserId', '')
+            ->call('save')
+            ->assertHasNoErrors();
+
+        $this->assertNull($org->refresh()->technician_user_id);
+    }
+
+    public function test_duplicate_provider_link_with_same_label_is_rejected(): void
+    {
+        $this->seed(\Database\Seeders\RolesAndPermissionsSeeder::class);
+
+        $user = User::factory()->create();
+        $org = Organization::create(['name' => 'Test Commune', 'slug' => 'test-commune', 'org_type' => 'client']);
+        $provider = Provider::create(['name' => 'Orange Pro']);
+
+        $this->actingAs($user);
+
+        $org->providers()->attach($provider->id, ['label' => 'Téléphonie']);
+
+        Livewire::test('organizations.identity-card', ['organization' => $org])
+            ->set('newProviderId', $provider->id)
+            ->set('newProviderLabel', 'Téléphonie')
+            ->call('addProvider')
+            ->assertHasErrors('newProviderId');
+
+        $this->assertCount(1, $org->providers()->get());
+    }
+
+    public function test_duplicate_provider_link_without_a_label_is_rejected(): void
+    {
+        $this->seed(\Database\Seeders\RolesAndPermissionsSeeder::class);
+
+        $user = User::factory()->create();
+        $org = Organization::create(['name' => 'Test Commune', 'slug' => 'test-commune', 'org_type' => 'client']);
+        $provider = Provider::create(['name' => 'Orange Pro']);
+
+        $this->actingAs($user);
+
+        $org->providers()->attach($provider->id, ['label' => null]);
+
+        Livewire::test('organizations.identity-card', ['organization' => $org])
+            ->set('newProviderId', $provider->id)
+            ->set('newProviderLabel', '')
+            ->call('addProvider')
+            ->assertHasErrors('newProviderId');
+
+        $this->assertCount(1, $org->providers()->get());
+    }
+
+    public function test_removing_a_provider_link_is_scoped_to_its_own_organization(): void
+    {
+        $this->seed(\Database\Seeders\RolesAndPermissionsSeeder::class);
+
+        $user = User::factory()->create();
+        $orgA = Organization::create(['name' => 'Commune A', 'slug' => 'commune-a', 'org_type' => 'client']);
+        $orgB = Organization::create(['name' => 'Commune B', 'slug' => 'commune-b', 'org_type' => 'client']);
+        $provider = Provider::create(['name' => 'Orange Pro']);
+
+        $orgA->providers()->attach($provider->id, ['label' => null]);
+        $pivotIdA = $orgA->providers()->first()->pivot->id;
+
+        $this->actingAs($user);
+
+        Livewire::test('organizations.identity-card', ['organization' => $orgB])
+            ->call('removeProvider', $pivotIdA);
+
+        $this->assertCount(1, $orgA->providers()->get());
+    }
+}
diff --git a/tests/Feature/ProviderTest.php b/tests/Feature/ProviderTest.php
new file mode 100644
index 0000000..1e86d74
--- /dev/null
+++ b/tests/Feature/ProviderTest.php
@@ -0,0 +1,76 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\Provider;
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Livewire\Livewire;
+use Tests\TestCase;
+
+class ProviderTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_provider_index_page_renders_for_an_authenticated_user(): void
+    {
+        $user = User::factory()->create();
+
+        $response = $this->actingAs($user)->get(route('providers.index'));
+
+        $response->assertOk();
+        $response->assertSee('Prestataires');
+    }
+
+    public function test_can_create_a_provider(): void
+    {
+        $user = User::factory()->create();
+        $this->actingAs($user);
+
+        Livewire::test('providers.form')
+            ->set('name', 'Orange Pro')
+            ->set('phone', '09 70 00 00 00')
+            ->set('email', 'contact@orange-pro.fr')
+            ->call('save')
+            ->assertHasNoErrors();
+
+        $this->assertDatabaseHas('providers', ['name' => 'Orange Pro', 'email' => 'contact@orange-pro.fr']);
+    }
+
+    public function test_blank_optional_fields_are_stored_as_null_not_empty_strings(): void
+    {
+        $user = User::factory()->create();
+        $this->actingAs($user);
+
+        Livewire::test('providers.form')
+            ->set('name', 'Minimal Provider')
+            ->call('save')
+            ->assertHasNoErrors();
+
+        $provider = Provider::where('name', 'Minimal Provider')->firstOrFail();
+        $this->assertNull($provider->phone);
+        $this->assertNull($provider->email);
+        $this->assertNull($provider->website);
+        $this->assertNull($provider->notes);
+    }
+
+    public function test_can_add_a_log_entry_to_a_provider(): void
+    {
+        $user = User::factory()->create();
+        $provider = Provider::create(['name' => 'Orange Pro']);
+
+        $this->actingAs($user);
+
+        Livewire::test('providers.form', ['provider' => $provider])
+            ->set('newLogCategory', 'contact')
+            ->set('newLogNote', "Mail envoyé le 21/08 pour demander des précisions sur le contrat.")
+            ->call('addLogEntry')
+            ->assertHasNoErrors();
+
+        $this->assertDatabaseHas('provider_log_entries', [
+            'provider_id' => $provider->id,
+            'category' => 'contact',
+            'created_by' => $user->id,
+        ]);
+    }
+}
diff --git a/tests/Feature/SettingsEnvPageTest.php b/tests/Feature/SettingsEnvPageTest.php
new file mode 100644
index 0000000..53c21c2
--- /dev/null
+++ b/tests/Feature/SettingsEnvPageTest.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class SettingsEnvPageTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_admin_settings_page_renders_with_the_new_drawio_section(): void
+    {
+        $this->seed(\Database\Seeders\RolesAndPermissionsSeeder::class);
+
+        $admin = User::factory()->create();
+        $admin->assignRole('Administrateur');
+
+        $response = $this->actingAs($admin)->get(route('settings.env'));
+
+        $response->assertOk();
+        $response->assertSee('Draw.io');
+        $response->assertSee('DRAWIO_URL');
+    }
+}