diff --git a/architektur-patterns.md b/architektur-patterns.md
index 08ba6df..968ef73 100644
--- a/architektur-patterns.md
+++ b/architektur-patterns.md
@@ -187,13 +187,23 @@ readonly class OrderManager
 }
 ```
 
-#### Provider (Data Layer)
+#### Provider Interface (Logic Layer)
+```php
+namespace App\Logic\Sales\Order;
+
+interface OrderProviderInterface
+{
+    public function fetchOrders(array $filters, int $page): array;
+}
+```
+
+#### Provider Implementierung (Data Layer)
 ```php
 namespace App\Data\Sales\Order\Provider;
 
-use App\Logic\Sales\Order\Manager\OrderManagerInterface;
+use App\Logic\Sales\Order\OrderProviderInterface;
 
-readonly class OrderProvider implements OrderManagerInterface
+readonly class OrderProvider implements OrderProviderInterface
 {
     public function fetchOrders(array $filters, int $page): array
     {
@@ -202,6 +212,7 @@ readonly class OrderProvider implements OrderManagerInterface
     }
 }
 ```
+```
 
 ## 3. Write Pattern (`src/Logic` $\rightarrow$ `src/Data`)