diff --git a/Hcs.WebApp/BackgroundServices/Delegates.cs b/Hcs.WebApp/BackgroundServices/Delegates.cs
new file mode 100644
index 0000000..9449448
--- /dev/null
+++ b/Hcs.WebApp/BackgroundServices/Delegates.cs
@@ -0,0 +1,8 @@
+namespace Hcs.WebApp.BackgroundServices
+{
+    public delegate void OperationStarted(int operationId, int campaignId, DateTime startedAt);
+
+    public delegate void OperationExecuted(int operationId, int campaignId, string messageGuid);
+
+    public delegate void OperationEnded(int operationId, int campaignId, DateTime endedAt, string failureReason);
+}
diff --git a/Hcs.WebApp/BackgroundServices/EventsAggregator.cs b/Hcs.WebApp/BackgroundServices/EventsAggregator.cs
new file mode 100644
index 0000000..18d64bf
--- /dev/null
+++ b/Hcs.WebApp/BackgroundServices/EventsAggregator.cs
@@ -0,0 +1,22 @@
+using Hcs.WebApp.Data.Hcs;
+
+namespace Hcs.WebApp.BackgroundServices
+{
+    public class EventsAggregator
+    {
+        public event Action<Operation> OnOperationCreated;
+        public event OperationStarted OnOperationStarted;
+        public event OperationExecuted OnOperationExecuted;
+        public event OperationEnded OnOperationEnded;
+
+        public EventsAggregator(OperationExecutionState operationExecutionState, ResultGetState resultGetState)
+        {
+            operationExecutionState.OnOperationCreated += (a) => OnOperationCreated?.Invoke(a);
+            operationExecutionState.OnOperationStarted += (a, b, c) => OnOperationStarted?.Invoke(a, b, c);
+            operationExecutionState.OnOperationExecuted += (a, b, c) => OnOperationExecuted?.Invoke(a, b, c);
+            operationExecutionState.OnOperationEnded += (a, b, c, d) => OnOperationEnded?.Invoke(a, b, c, d);
+
+            resultGetState.OnOperationEnded += (a, b, c, d) => OnOperationEnded?.Invoke(a, b, c, d);
+        }
+    }
+}
diff --git a/Hcs.WebApp/BackgroundServices/OperationExecutionState.cs b/Hcs.WebApp/BackgroundServices/OperationExecutionState.cs
index 4d9c555..dc122d9 100644
--- a/Hcs.WebApp/BackgroundServices/OperationExecutionState.cs
+++ b/Hcs.WebApp/BackgroundServices/OperationExecutionState.cs
@@ -5,10 +5,6 @@ namespace Hcs.WebApp.BackgroundServices
 {
     public class OperationExecutionState
     {
-        public delegate void OperationStarted(int operationId, int campaignId, DateTime startedAt);
-        public delegate void OperationExecuted(int operationId, int campaignId, string messageGuid);
-        public delegate void OperationEnded(int operationId, int campaignId, DateTime endedAt, string failureReason);
-
         private readonly ConcurrentQueue<Operation> operationsInQueue = new();
         private readonly HashSet<Operation> operationsInProcess = [];
 
diff --git a/Hcs.WebApp/BackgroundServices/ResultGetState.cs b/Hcs.WebApp/BackgroundServices/ResultGetState.cs
index 998470e..390b07b 100644
--- a/Hcs.WebApp/BackgroundServices/ResultGetState.cs
+++ b/Hcs.WebApp/BackgroundServices/ResultGetState.cs
@@ -5,8 +5,6 @@ namespace Hcs.WebApp.BackgroundServices
 {
     public class ResultGetState
     {
-        public delegate void OperationEnded(int operationId, int campaignId, DateTime endedAt, string failureReason);
-
         private readonly ConcurrentQueue<Operation> operationsInQueue = new();
         private readonly HashSet<Operation> operationsInProcess = [];
 
diff --git a/Hcs.WebApp/Components/Pages/Campaigns.razor b/Hcs.WebApp/Components/Pages/Campaigns.razor
index 2b2911e..baf725a 100644
--- a/Hcs.WebApp/Components/Pages/Campaigns.razor
+++ b/Hcs.WebApp/Components/Pages/Campaigns.razor
@@ -11,8 +11,7 @@
 @inject AuthenticationStateProvider AuthenticationStateProvider
 @inject HeadquartersService HeadquartersService
 @inject CampaignManagementState CampaignManagementState
-@inject OperationExecutionState OperationExecutionState
-@inject ResultGetState ResultGetState
+@inject EventsAggregator EventsAggregator
 
 <PageTitle>Кампании</PageTitle>
 
@@ -85,11 +84,9 @@
                 CampaignManagementState.OnCampaignProgressStep += OnCampaignProgressStep;
                 CampaignManagementState.OnCampaignEnded += OnCampaignEnded;
 
-                OperationExecutionState.OnOperationStarted += OnOperationStarted;
-                OperationExecutionState.OnOperationExecuted += OnOperationExecuted;
-                OperationExecutionState.OnOperationEnded += OnOperationEnded;
-
-                ResultGetState.OnOperationEnded += OnOperationEnded;
+                EventsAggregator.OnOperationStarted += OnOperationStarted;
+                EventsAggregator.OnOperationExecuted += OnOperationExecuted;
+                EventsAggregator.OnOperationEnded += OnOperationEnded;
             }
 
             ChangeState(PageState.Idle);
@@ -263,10 +260,8 @@
         CampaignManagementState.OnCampaignProgressStep -= OnCampaignProgressStep;
         CampaignManagementState.OnCampaignEnded -= OnCampaignEnded;
 
-        OperationExecutionState.OnOperationStarted -= OnOperationStarted;
-        OperationExecutionState.OnOperationExecuted -= OnOperationExecuted;
-        OperationExecutionState.OnOperationEnded -= OnOperationEnded;
-
-        ResultGetState.OnOperationEnded -= OnOperationEnded;
+        EventsAggregator.OnOperationStarted -= OnOperationStarted;
+        EventsAggregator.OnOperationExecuted -= OnOperationExecuted;
+        EventsAggregator.OnOperationEnded -= OnOperationEnded;
     }
 }
diff --git a/Hcs.WebApp/Components/Pages/Operations.razor b/Hcs.WebApp/Components/Pages/Operations.razor
index 9aa75e4..4903ac1 100644
--- a/Hcs.WebApp/Components/Pages/Operations.razor
+++ b/Hcs.WebApp/Components/Pages/Operations.razor
@@ -10,8 +10,7 @@
 
 @inject AuthenticationStateProvider AuthenticationStateProvider
 @inject HeadquartersService HeadquartersService
-@inject OperationExecutionState OperationExecutionState
-@inject ResultGetState ResultGetState
+@inject EventsAggregator EventsAggregator
 
 <PageTitle>Операции</PageTitle>
 
@@ -61,12 +60,10 @@
             {
                 operations = await HeadquartersService.GetOperationsAsync();
 
-                OperationExecutionState.OnOperationCreated += OnOperationCreated;
-                OperationExecutionState.OnOperationStarted += OnOperationStarted;
-                OperationExecutionState.OnOperationExecuted += OnOperationExecuted;
-                OperationExecutionState.OnOperationEnded += OnOperationEnded;
-
-                ResultGetState.OnOperationEnded += OnOperationEnded;
+                EventsAggregator.OnOperationCreated += OnOperationCreated;
+                EventsAggregator.OnOperationStarted += OnOperationStarted;
+                EventsAggregator.OnOperationExecuted += OnOperationExecuted;
+                EventsAggregator.OnOperationEnded += OnOperationEnded;
             }
 
             ChangeState(PageState.Idle);
@@ -137,11 +134,9 @@
 
     public void Dispose()
     {
-        OperationExecutionState.OnOperationCreated -= OnOperationCreated;
-        OperationExecutionState.OnOperationStarted -= OnOperationStarted;
-        OperationExecutionState.OnOperationExecuted -= OnOperationExecuted;
-        OperationExecutionState.OnOperationEnded -= OnOperationEnded;
-
-        ResultGetState.OnOperationEnded -= OnOperationEnded;
+        EventsAggregator.OnOperationCreated -= OnOperationCreated;
+        EventsAggregator.OnOperationStarted -= OnOperationStarted;
+        EventsAggregator.OnOperationExecuted -= OnOperationExecuted;
+        EventsAggregator.OnOperationEnded -= OnOperationEnded;
     }
 }
diff --git a/Hcs.WebApp/Program.cs b/Hcs.WebApp/Program.cs
index e59c25f..ebefe22 100644
--- a/Hcs.WebApp/Program.cs
+++ b/Hcs.WebApp/Program.cs
@@ -74,10 +74,13 @@ builder.Services.AddScoped<HouseService>();
 builder.Services.AddSingleton<CampaignManagementState>();
 builder.Services.AddSingleton<OperationExecutionState>();
 builder.Services.AddSingleton<ResultGetState>();
+
 builder.Services.AddSingleton<ManagerFactory>();
 builder.Services.AddSingleton<ExecutorFactory>();
 builder.Services.AddSingleton<ResultGetterFactory>();
 
+builder.Services.AddSingleton<EventsAggregator>();
+
 builder.Services.AddHostedService<CampaignManagementService>();
 builder.Services.AddHostedService<OperationExecutionService>();
 builder.Services.AddHostedService<ResultGetService>();