diff --git a/routers/admin_technik.py b/routers/admin_technik.py
index abda331..8a69eec 100644
--- a/routers/admin_technik.py
+++ b/routers/admin_technik.py
@@ -1,5 +1,7 @@
-from fastapi import APIRouter, Depends, Request
+from fastapi import APIRouter, Depends, Form, Request
+from fastapi.responses import RedirectResponse
 
+from anode_client import anode_request
 from auth import require_admin
 from templating import templates
 
@@ -8,7 +10,173 @@ router = APIRouter(prefix="/admin/technik")
 
 
 @router.get("")
-def index(request: Request, user: dict = Depends(require_admin)):
+def index(user: dict = Depends(require_admin)):
+    return RedirectResponse("/admin/technik/merkmale", status_code=303)
+
+
+# --- Merkmale ---
+
+@router.get("/merkmale")
+def merkmale_liste(request: Request, user: dict = Depends(require_admin)):
+    merkmale_result = anode_request("GET", "/api/v1/merkmale")
+    merkmale = merkmale_result.get("merkmale", []) if merkmale_result.get("success") else []
+
+    kategorien_result = anode_request("GET", "/api/v1/kategorien")
+    kategorien = kategorien_result.get("kategorien", []) if kategorien_result.get("success") else []
+
     return templates.TemplateResponse(
-        request, "admin/platzhalter.html", {"user": user, "titel": "Technik/Datenbank"}
+        request,
+        "admin/technik_merkmale.html",
+        {"user": user, "merkmale": merkmale, "kategorien": kategorien},
+    )
+
+
+@router.post("/merkmale")
+def merkmal_anlegen(
+    key: str = Form(...), name: str = Form(...), description: str = Form(default=""),
+    user: dict = Depends(require_admin),
+):
+    anode_request(
+        "POST", "/api/v1/merkmale",
+        json={"key": key, "name": name, "description": description or None},
+    )
+
+    return RedirectResponse("/admin/technik/merkmale", status_code=303)
+
+
+@router.post("/merkmale/{merkmal_id}")
+def merkmal_aktualisieren(
+    merkmal_id: str,
+    name: str = Form(...),
+    description: str = Form(default=""),
+    kategorie_id: str = Form(default=""),
+    im_auftragskatalog: str = Form(default=""),
+    user: dict = Depends(require_admin),
+):
+    anode_request(
+        "PATCH", f"/api/v1/merkmale/{merkmal_id}",
+        json={
+            "name": name,
+            "description": description or None,
+            "kategorie_id": kategorie_id or None,
+            "im_auftragskatalog": im_auftragskatalog == "on",
+        },
+    )
+
+    return RedirectResponse("/admin/technik/merkmale", status_code=303)
+
+
+# --- Kategorien ---
+
+@router.get("/kategorien")
+def kategorien_liste(request: Request, user: dict = Depends(require_admin)):
+    result = anode_request("GET", "/api/v1/kategorien")
+    kategorien = result.get("kategorien", []) if result.get("success") else []
+
+    return templates.TemplateResponse(
+        request, "admin/technik_kategorien.html", {"user": user, "kategorien": kategorien}
+    )
+
+
+@router.post("/kategorien")
+def kategorie_anlegen(
+    key: str = Form(...), name: str = Form(...), description: str = Form(default=""),
+    sort_order: int = Form(default=0), user: dict = Depends(require_admin),
+):
+    anode_request(
+        "POST", "/api/v1/kategorien",
+        json={"key": key, "name": name, "description": description or None, "sort_order": sort_order},
+    )
+
+    return RedirectResponse("/admin/technik/kategorien", status_code=303)
+
+
+# --- Workspaces ---
+
+@router.get("/workspaces")
+def workspaces_liste(request: Request, user: dict = Depends(require_admin)):
+    result = anode_request("GET", "/api/v1/workspaces")
+    workspaces = result.get("workspaces", []) if result.get("success") else []
+
+    orgs_result = anode_request("GET", "/api/v1/organizations")
+    organizations = orgs_result.get("organizations", []) if orgs_result.get("success") else []
+
+    return templates.TemplateResponse(
+        request,
+        "admin/technik_workspaces.html",
+        {"user": user, "workspaces": workspaces, "organizations": organizations},
+    )
+
+
+@router.post("/workspaces")
+def workspace_anlegen(
+    key: str = Form(...), name: str = Form(...), description: str = Form(default=""),
+    organization_id: str = Form(default=""), user: dict = Depends(require_admin),
+):
+    anode_request(
+        "POST", "/api/v1/workspaces",
+        json={
+            "key": key, "name": name, "description": description or None,
+            "organization_id": organization_id or None,
+        },
+    )
+
+    return RedirectResponse("/admin/technik/workspaces", status_code=303)
+
+
+@router.get("/workspaces/{workspace_id}")
+def workspace_detail(request: Request, workspace_id: str, user: dict = Depends(require_admin)):
+    result = anode_request("GET", f"/api/v1/workspaces/{workspace_id}")
+    workspace = result.get("workspace") if result.get("success") else None
+
+    merkmale_result = anode_request("GET", "/api/v1/merkmale")
+    alle_merkmale = merkmale_result.get("merkmale", []) if merkmale_result.get("success") else []
+
+    komponierte_ids = {m["id"] for m in workspace["merkmale"]} if workspace else set()
+    verfuegbare_merkmale = [m for m in alle_merkmale if m["id"] not in komponierte_ids]
+
+    return templates.TemplateResponse(
+        request,
+        "admin/technik_workspace_detail.html",
+        {
+            "user": user,
+            "workspace": workspace,
+            "workspace_id": workspace_id,
+            "verfuegbare_merkmale": verfuegbare_merkmale,
+        },
+    )
+
+
+@router.post("/workspaces/{workspace_id}/merkmale")
+def workspace_merkmal_hinzufuegen(
+    workspace_id: str, merkmal_id: str = Form(...), user: dict = Depends(require_admin)
+):
+    anode_request("POST", f"/api/v1/workspaces/{workspace_id}/merkmale/{merkmal_id}")
+
+    return RedirectResponse(f"/admin/technik/workspaces/{workspace_id}", status_code=303)
+
+
+@router.post("/workspaces/{workspace_id}/merkmale/{merkmal_id}/entfernen")
+def workspace_merkmal_entfernen(
+    workspace_id: str, merkmal_id: str, user: dict = Depends(require_admin)
+):
+    anode_request("DELETE", f"/api/v1/workspaces/{workspace_id}/merkmale/{merkmal_id}")
+
+    return RedirectResponse(f"/admin/technik/workspaces/{workspace_id}", status_code=303)
+
+
+# --- Backends / Blueprints (nur Anzeige) ---
+
+@router.get("/backends")
+def backends_liste(request: Request, user: dict = Depends(require_admin)):
+    backends_result = anode_request("GET", "/api/v1/backends")
+    backends = backends_result.get("backends", []) if backends_result.get("success") else []
+
+    blueprints_result = anode_request("GET", "/api/v1/blueprints")
+    blueprints = blueprints_result.get("blueprints", []) if blueprints_result.get("success") else []
+
+    return templates.TemplateResponse(
+        request,
+        "admin/technik_backends.html",
+        {"user": user, "backends": backends, "blueprints": blueprints},
     )
diff --git a/templates/admin/technik_backends.html b/templates/admin/technik_backends.html
new file mode 100644
index 0000000..e867b5b
--- /dev/null
+++ b/templates/admin/technik_backends.html
@@ -0,0 +1,36 @@
+{% extends "admin/layout.html" %}
+{% block title %}Backends — Tuxflotte Admin{% endblock %}
+{% block admin_content %}
+<nav>
+    <ul>
+        <li><a href="/admin/technik/merkmale">Merkmale</a></li>
+        <li><a href="/admin/technik/kategorien">Kategorien</a></li>
+        <li><a href="/admin/technik/workspaces">Workspaces</a></li>
+        <li><a href="/admin/technik/backends"><strong>Backends/Blueprints</strong></a></li>
+    </ul>
+</nav>
+<h2>Backends</h2>
+<p><small>Nur Anzeige — Änderungen brauchen echten Ansible-Rollen-Code, nicht nur einen Datenbankeintrag.</small></p>
+<figure>
+<table>
+    <thead><tr><th>Key</th><th>Name</th><th>Installer-Typ</th><th>Version</th></tr></thead>
+    <tbody>
+    {% for b in backends %}
+        <tr><td><code>{{ b.key }}</code></td><td>{{ b.name }}</td><td>{{ b.installer_type }}</td><td>{{ b.version or "—" }}</td></tr>
+    {% endfor %}
+    </tbody>
+</table>
+</figure>
+
+<h2>Blueprints</h2>
+<figure>
+<table>
+    <thead><tr><th>Merkmal</th><th>Backend</th><th>Ansible-Rolle</th></tr></thead>
+    <tbody>
+    {% for bp in blueprints %}
+        <tr><td><code>{{ bp.merkmal }}</code></td><td>{{ bp.backend }}</td><td><code>{{ bp.ansible_role }}</code></td></tr>
+    {% endfor %}
+    </tbody>
+</table>
+</figure>
+{% endblock %}
diff --git a/templates/admin/technik_kategorien.html b/templates/admin/technik_kategorien.html
new file mode 100644
index 0000000..8aadc7d
--- /dev/null
+++ b/templates/admin/technik_kategorien.html
@@ -0,0 +1,39 @@
+{% extends "admin/layout.html" %}
+{% block title %}Kategorien — Tuxflotte Admin{% endblock %}
+{% block admin_content %}
+<nav>
+    <ul>
+        <li><a href="/admin/technik/merkmale">Merkmale</a></li>
+        <li><a href="/admin/technik/kategorien"><strong>Kategorien</strong></a></li>
+        <li><a href="/admin/technik/workspaces">Workspaces</a></li>
+        <li><a href="/admin/technik/backends">Backends/Blueprints</a></li>
+    </ul>
+</nav>
+<h2>Kategorien</h2>
+
+<figure>
+<table>
+    <thead><tr><th>Key</th><th>Name</th><th>Reihenfolge</th></tr></thead>
+    <tbody>
+    {% for k in kategorien %}
+        <tr>
+            <td><code>{{ k.key }}</code></td>
+            <td>{{ k.name }}</td>
+            <td>{{ k.sort_order }}</td>
+        </tr>
+    {% endfor %}
+    </tbody>
+</table>
+</figure>
+
+<details>
+<summary role="button" class="secondary outline">Neue Kategorie anlegen</summary>
+<form method="post" action="/admin/technik/kategorien">
+    <label>Key<input type="text" name="key" required></label>
+    <label>Name<input type="text" name="name" required></label>
+    <label>Beschreibung<input type="text" name="description"></label>
+    <label>Reihenfolge<input type="number" name="sort_order" value="0"></label>
+    <button type="submit">Anlegen</button>
+</form>
+</details>
+{% endblock %}
diff --git a/templates/admin/technik_merkmale.html b/templates/admin/technik_merkmale.html
new file mode 100644
index 0000000..386f9c1
--- /dev/null
+++ b/templates/admin/technik_merkmale.html
@@ -0,0 +1,61 @@
+{% extends "admin/layout.html" %}
+{% block title %}Merkmale — Tuxflotte Admin{% endblock %}
+{% block admin_content %}
+<nav>
+    <ul>
+        <li><a href="/admin/technik/merkmale"><strong>Merkmale</strong></a></li>
+        <li><a href="/admin/technik/kategorien">Kategorien</a></li>
+        <li><a href="/admin/technik/workspaces">Workspaces</a></li>
+        <li><a href="/admin/technik/backends">Backends/Blueprints</a></li>
+    </ul>
+</nav>
+<h2>Merkmale</h2>
+
+<figure>
+<table>
+    <thead><tr><th>Key</th><th>Name</th><th>Kategorie</th><th>Katalogfähig</th><th></th></tr></thead>
+    <tbody>
+    {% for m in merkmale %}
+        <tr>
+            <td><code>{{ m.key }}</code></td>
+            <td>{{ m.name }}</td>
+            <td>{{ m.kategorie_name or "—" }}</td>
+            <td>{{ "ja" if m.im_auftragskatalog else "nein" }}</td>
+            <td>
+                <details>
+                <summary role="button" class="outline">Bearbeiten</summary>
+                <form method="post" action="/admin/technik/merkmale/{{ m.id }}">
+                    <label>Name<input type="text" name="name" value="{{ m.name }}" required></label>
+                    <label>Beschreibung<input type="text" name="description" value="{{ m.description or '' }}"></label>
+                    <label>Kategorie
+                        <select name="kategorie_id">
+                            <option value="">— keine —</option>
+                            {% for k in kategorien %}
+                            <option value="{{ k.id }}" {{ "selected" if k.id == m.kategorie_id else "" }}>{{ k.name }}</option>
+                            {% endfor %}
+                        </select>
+                    </label>
+                    <label>
+                        <input type="checkbox" name="im_auftragskatalog" {{ "checked" if m.im_auftragskatalog else "" }}>
+                        Im Auftragskatalog
+                    </label>
+                    <button type="submit">Speichern</button>
+                </form>
+                </details>
+            </td>
+        </tr>
+    {% endfor %}
+    </tbody>
+</table>
+</figure>
+
+<details>
+<summary role="button" class="secondary outline">Neues Merkmal anlegen</summary>
+<form method="post" action="/admin/technik/merkmale">
+    <label>Key<input type="text" name="key" required></label>
+    <label>Name<input type="text" name="name" required></label>
+    <label>Beschreibung<input type="text" name="description"></label>
+    <button type="submit">Anlegen</button>
+</form>
+</details>
+{% endblock %}
diff --git a/templates/admin/technik_workspace_detail.html b/templates/admin/technik_workspace_detail.html
new file mode 100644
index 0000000..4066fe8
--- /dev/null
+++ b/templates/admin/technik_workspace_detail.html
@@ -0,0 +1,46 @@
+{% extends "admin/layout.html" %}
+{% block title %}{{ workspace.name if workspace else workspace_id }} — Tuxflotte Admin{% endblock %}
+{% block admin_content %}
+<p><a href="/admin/technik/workspaces">← Workspaces</a></p>
+{% if not workspace %}
+    <p><mark>Workspace wurde nicht gefunden.</mark></p>
+{% else %}
+<h2>{{ workspace.name }}</h2>
+<p>{{ workspace.organization_name or "Global" }}{% if workspace.description %} — {{ workspace.description }}{% endif %}</p>
+
+<h3>Zusammensetzung</h3>
+{% if not workspace.merkmale %}
+    <p>Noch keine Merkmale zugeordnet.</p>
+{% else %}
+<figure>
+<table>
+    <tbody>
+    {% for m in workspace.merkmale %}
+        <tr>
+            <td>{{ m.name }} <code>{{ m.key }}</code></td>
+            <td>
+                <form method="post" action="/admin/technik/workspaces/{{ workspace_id }}/merkmale/{{ m.id }}/entfernen">
+                    <button type="submit" class="secondary outline">Entfernen</button>
+                </form>
+            </td>
+        </tr>
+    {% endfor %}
+    </tbody>
+</table>
+</figure>
+{% endif %}
+
+{% if verfuegbare_merkmale %}
+<form method="post" action="/admin/technik/workspaces/{{ workspace_id }}/merkmale">
+    <label>Merkmal hinzufügen
+        <select name="merkmal_id">
+            {% for m in verfuegbare_merkmale %}
+            <option value="{{ m.id }}">{{ m.name }} ({{ m.key }})</option>
+            {% endfor %}
+        </select>
+    </label>
+    <button type="submit">Hinzufügen</button>
+</form>
+{% endif %}
+{% endif %}
+{% endblock %}
diff --git a/templates/admin/technik_workspaces.html b/templates/admin/technik_workspaces.html
new file mode 100644
index 0000000..9c20b28
--- /dev/null
+++ b/templates/admin/technik_workspaces.html
@@ -0,0 +1,47 @@
+{% extends "admin/layout.html" %}
+{% block title %}Workspaces — Tuxflotte Admin{% endblock %}
+{% block admin_content %}
+<nav>
+    <ul>
+        <li><a href="/admin/technik/merkmale">Merkmale</a></li>
+        <li><a href="/admin/technik/kategorien">Kategorien</a></li>
+        <li><a href="/admin/technik/workspaces"><strong>Workspaces</strong></a></li>
+        <li><a href="/admin/technik/backends">Backends/Blueprints</a></li>
+    </ul>
+</nav>
+<h2>Workspaces</h2>
+
+<figure>
+<table>
+    <thead><tr><th>Key</th><th>Name</th><th>Organisation</th><th></th></tr></thead>
+    <tbody>
+    {% for w in workspaces %}
+        <tr>
+            <td><code>{{ w.key }}</code></td>
+            <td>{{ w.name }}</td>
+            <td>{{ w.organization_name or "Global" }}</td>
+            <td><a href="/admin/technik/workspaces/{{ w.id }}" role="button" class="outline">Zusammensetzung</a></td>
+        </tr>
+    {% endfor %}
+    </tbody>
+</table>
+</figure>
+
+<details>
+<summary role="button" class="secondary outline">Neuen Workspace anlegen</summary>
+<form method="post" action="/admin/technik/workspaces">
+    <label>Key<input type="text" name="key" required></label>
+    <label>Name<input type="text" name="name" required></label>
+    <label>Beschreibung<input type="text" name="description"></label>
+    <label>Organisation (leer = global)
+        <select name="organization_id">
+            <option value="">— global —</option>
+            {% for org in organizations %}
+            <option value="{{ org.id }}">{{ org.name }}</option>
+            {% endfor %}
+        </select>
+    </label>
+    <button type="submit">Anlegen</button>
+</form>
+</details>
+{% endblock %}