diff --git a/WD7UVN_HFT_2023241.Endpoint/Controllers/CustomerController.cs b/WD7UVN_HFT_2023241.Endpoint/Controllers/CustomerController.cs
index 186b783..d452147 100644
--- a/WD7UVN_HFT_2023241.Endpoint/Controllers/CustomerController.cs
+++ b/WD7UVN_HFT_2023241.Endpoint/Controllers/CustomerController.cs
@@ -16,10 +16,17 @@ namespace WD7UVN_HFT_2023241.Endpoint
             this.LogicServices = LogicServices;
         }
 
-        [HttpGet()]
-        public IActionResult ReadAllCustomers()
+        [HttpGet("WhoUsesService/{id}")]
+        public IQueryable<Customer> WhoUsesService(int id)
         {
-            return View(LogicServices.CRUDOperations.ReadAllCustomers());
+            return LogicServices.WhoUsesService(id);
+        }
+
+        [HttpGet()]
+        public IQueryable<Customer> ReadAllCustomers()
+        {
+
+            return LogicServices.CRUDOperations.ReadAllCustomers();
         }
 
         [HttpGet("{id}")]
diff --git a/WD7UVN_HFT_2023241.Endpoint/Controllers/MaintainerTeamController.cs b/WD7UVN_HFT_2023241.Endpoint/Controllers/MaintainerTeamController.cs
index 1e7d2b4..0ead984 100644
--- a/WD7UVN_HFT_2023241.Endpoint/Controllers/MaintainerTeamController.cs
+++ b/WD7UVN_HFT_2023241.Endpoint/Controllers/MaintainerTeamController.cs
@@ -17,9 +17,9 @@ namespace WD7UVN_HFT_2023241.Endpoint
         }
 
         [HttpGet()]
-        public IActionResult ReadAllMaintainerTeams()
+        public IQueryable<MaintainerTeam> ReadAllMaintainerTeams()
         {
-            return View(LogicServices.CRUDOperations.ReadAllMaintainerTeams());
+            return LogicServices.CRUDOperations.ReadAllMaintainerTeams();
         }
 
         [HttpGet("{id}")]
diff --git a/WD7UVN_HFT_2023241.Endpoint/Controllers/ServiceController.cs b/WD7UVN_HFT_2023241.Endpoint/Controllers/ServiceController.cs
index e7a2a3e..1ed297a 100644
--- a/WD7UVN_HFT_2023241.Endpoint/Controllers/ServiceController.cs
+++ b/WD7UVN_HFT_2023241.Endpoint/Controllers/ServiceController.cs
@@ -17,9 +17,9 @@ namespace WD7UVN_HFT_2023241.Endpoint
         }
 
         [HttpGet()]
-        public IActionResult ReadAllServices()
+        public IQueryable<Service> ReadAllServices()
         {
-            return View(LogicServices.CRUDOperations.ReadAllServices());
+            return LogicServices.CRUDOperations.ReadAllServices();
         }
 
         [HttpGet("{id}")]