diff --git a/services/ads-analytics-service-net/tests/AdsAnalyticsService.FunctionalTests/Controllers/AnalyticsMetricsControllerTests.cs b/services/ads-analytics-service-net/tests/AdsAnalyticsService.FunctionalTests/Controllers/AnalyticsMetricsControllerTests.cs
new file mode 100644
index 00000000..1da90381
--- /dev/null
+++ b/services/ads-analytics-service-net/tests/AdsAnalyticsService.FunctionalTests/Controllers/AnalyticsMetricsControllerTests.cs
@@ -0,0 +1,44 @@
+using System.Net;
+using FluentAssertions;
+using Microsoft.AspNetCore.Mvc.Testing;
+using Xunit;
+
+namespace AdsAnalyticsService.FunctionalTests.Controllers;
+
+/// <summary>
+/// EN: Functional tests for analytics metrics and health endpoints.
+/// VI: Functional tests cho endpoint metrics analytics và health.
+/// </summary>
+public class AnalyticsMetricsControllerTests : IClassFixture<CustomWebApplicationFactory>
+{
+    private readonly HttpClient _client;
+
+    public AnalyticsMetricsControllerTests(CustomWebApplicationFactory factory)
+    {
+        _client = factory.CreateClient(new WebApplicationFactoryClientOptions
+        {
+            AllowAutoRedirect = false,
+        });
+    }
+
+    [Fact]
+    public async Task GetCampaignMetrics_WithUnknownCampaign_ShouldReturnNotFound()
+    {
+        // Act
+        var response = await _client.GetAsync(
+            $"/api/v1/ads-analytics/campaigns/{Guid.NewGuid()}/metrics");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.NotFound);
+    }
+
+    [Fact]
+    public async Task HealthCheck_ShouldReturnHealthy()
+    {
+        // Act
+        var response = await _client.GetAsync("/health/live");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+    }
+}
diff --git a/services/ads-analytics-service-net/tests/AdsAnalyticsService.FunctionalTests/Controllers/SamplesControllerTests.cs b/services/ads-analytics-service-net/tests/AdsAnalyticsService.FunctionalTests/Controllers/SamplesControllerTests.cs
deleted file mode 100644
index 31fa743e..00000000
--- a/services/ads-analytics-service-net/tests/AdsAnalyticsService.FunctionalTests/Controllers/SamplesControllerTests.cs
+++ /dev/null
@@ -1,80 +0,0 @@
-using System.Net;
-using System.Net.Http.Json;
-using FluentAssertions;
-using Microsoft.AspNetCore.Mvc.Testing;
-using Xunit;
-
-namespace AdsAnalyticsService.FunctionalTests.Controllers;
-
-/// <summary>
-/// EN: Functional tests for Samples API endpoints.
-/// VI: Functional tests cho các endpoints API Samples.
-/// </summary>
-public class SamplesControllerTests : IClassFixture<CustomWebApplicationFactory>
-{
-    private readonly HttpClient _client;
-
-    public SamplesControllerTests(CustomWebApplicationFactory factory)
-    {
-        _client = factory.CreateClient(new WebApplicationFactoryClientOptions
-        {
-            AllowAutoRedirect = false
-        });
-    }
-
-    [Fact]
-    public async Task GetSamples_ShouldReturnOkWithEmptyList()
-    {
-        // Act
-        var response = await _client.GetAsync("/api/v1/samples");
-
-        // Assert
-        response.StatusCode.Should().Be(HttpStatusCode.OK);
-        var content = await response.Content.ReadFromJsonAsync<ApiResponse<List<object>>>();
-        content?.Success.Should().BeTrue();
-    }
-
-    [Fact]
-    public async Task CreateSample_WithValidData_ShouldReturnCreated()
-    {
-        // Arrange
-        var request = new { Name = "Test Sample", Description = "Test Description" };
-
-        // Act
-        var response = await _client.PostAsJsonAsync("/api/v1/samples", request);
-
-        // Assert
-        response.StatusCode.Should().Be(HttpStatusCode.Created);
-        var content = await response.Content.ReadFromJsonAsync<ApiResponse<CreateSampleResult>>();
-        content?.Success.Should().BeTrue();
-        content?.Data?.Id.Should().NotBeEmpty();
-    }
-
-    [Fact]
-    public async Task GetSample_WithInvalidId_ShouldReturnNotFound()
-    {
-        // Arrange
-        var invalidId = Guid.NewGuid();
-
-        // Act
-        var response = await _client.GetAsync($"/api/v1/samples/{invalidId}");
-
-        // Assert
-        response.StatusCode.Should().Be(HttpStatusCode.NotFound);
-    }
-
-    [Fact]
-    public async Task HealthCheck_ShouldReturnHealthy()
-    {
-        // Act
-        var response = await _client.GetAsync("/health/live");
-
-        // Assert
-        response.StatusCode.Should().Be(HttpStatusCode.OK);
-    }
-
-    // EN: Helper DTOs for deserialization
-    // VI: Helper DTOs để deserialize
-    private record ApiResponse<T>(bool Success, T? Data);
-    private record CreateSampleResult(Guid Id);
-}
diff --git a/services/ads-manager-service-net/tests/AdsManagerService.FunctionalTests/Controllers/CampaignsControllerTests.cs b/services/ads-manager-service-net/tests/AdsManagerService.FunctionalTests/Controllers/CampaignsControllerTests.cs
new file mode 100644
index 00000000..8a20f6b5
--- /dev/null
+++ b/services/ads-manager-service-net/tests/AdsManagerService.FunctionalTests/Controllers/CampaignsControllerTests.cs
@@ -0,0 +1,43 @@
+using System.Net;
+using FluentAssertions;
+using Microsoft.AspNetCore.Mvc.Testing;
+using Xunit;
+
+namespace AdsManagerService.FunctionalTests.Controllers;
+
+/// <summary>
+/// EN: Functional tests for campaign listing and health endpoints.
+/// VI: Functional tests cho endpoint danh sách campaign và health.
+/// </summary>
+public class CampaignsControllerTests : IClassFixture<CustomWebApplicationFactory>
+{
+    private readonly HttpClient _client;
+
+    public CampaignsControllerTests(CustomWebApplicationFactory factory)
+    {
+        _client = factory.CreateClient(new WebApplicationFactoryClientOptions
+        {
+            AllowAutoRedirect = false,
+        });
+    }
+
+    [Fact]
+    public async Task ListCampaigns_ShouldReturnOk()
+    {
+        // Act
+        var response = await _client.GetAsync("/api/v1/ads-manager/campaigns");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+    }
+
+    [Fact]
+    public async Task HealthCheck_ShouldReturnHealthy()
+    {
+        // Act
+        var response = await _client.GetAsync("/health/live");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+    }
+}
diff --git a/services/ads-manager-service-net/tests/AdsManagerService.FunctionalTests/Controllers/SamplesControllerTests.cs b/services/ads-manager-service-net/tests/AdsManagerService.FunctionalTests/Controllers/SamplesControllerTests.cs
deleted file mode 100644
index 5c40ae2b..00000000
--- a/services/ads-manager-service-net/tests/AdsManagerService.FunctionalTests/Controllers/SamplesControllerTests.cs
+++ /dev/null
@@ -1,80 +0,0 @@
-using System.Net;
-using System.Net.Http.Json;
-using FluentAssertions;
-using Microsoft.AspNetCore.Mvc.Testing;
-using Xunit;
-
-namespace AdsManagerService.FunctionalTests.Controllers;
-
-/// <summary>
-/// EN: Functional tests for Samples API endpoints.
-/// VI: Functional tests cho các endpoints API Samples.
-/// </summary>
-public class SamplesControllerTests : IClassFixture<CustomWebApplicationFactory>
-{
-    private readonly HttpClient _client;
-
-    public SamplesControllerTests(CustomWebApplicationFactory factory)
-    {
-        _client = factory.CreateClient(new WebApplicationFactoryClientOptions
-        {
-            AllowAutoRedirect = false
-        });
-    }
-
-    [Fact]
-    public async Task GetSamples_ShouldReturnOkWithEmptyList()
-    {
-        // Act
-        var response = await _client.GetAsync("/api/v1/samples");
-
-        // Assert
-        response.StatusCode.Should().Be(HttpStatusCode.OK);
-        var content = await response.Content.ReadFromJsonAsync<ApiResponse<List<object>>>();
-        content?.Success.Should().BeTrue();
-    }
-
-    [Fact]
-    public async Task CreateSample_WithValidData_ShouldReturnCreated()
-    {
-        // Arrange
-        var request = new { Name = "Test Sample", Description = "Test Description" };
-
-        // Act
-        var response = await _client.PostAsJsonAsync("/api/v1/samples", request);
-
-        // Assert
-        response.StatusCode.Should().Be(HttpStatusCode.Created);
-        var content = await response.Content.ReadFromJsonAsync<ApiResponse<CreateSampleResult>>();
-        content?.Success.Should().BeTrue();
-        content?.Data?.Id.Should().NotBeEmpty();
-    }
-
-    [Fact]
-    public async Task GetSample_WithInvalidId_ShouldReturnNotFound()
-    {
-        // Arrange
-        var invalidId = Guid.NewGuid();
-
-        // Act
-        var response = await _client.GetAsync($"/api/v1/samples/{invalidId}");
-
-        // Assert
-        response.StatusCode.Should().Be(HttpStatusCode.NotFound);
-    }
-
-    [Fact]
-    public async Task HealthCheck_ShouldReturnHealthy()
-    {
-        // Act
-        var response = await _client.GetAsync("/health/live");
-
-        // Assert
-        response.StatusCode.Should().Be(HttpStatusCode.OK);
-    }
-
-    // EN: Helper DTOs for deserialization
-    // VI: Helper DTOs để deserialize
-    private record ApiResponse<T>(bool Success, T? Data);
-    private record CreateSampleResult(Guid Id);
-}
diff --git a/services/ads-tracking-service-net/tests/AdsTrackingService.FunctionalTests/Controllers/PixelsControllerTests.cs b/services/ads-tracking-service-net/tests/AdsTrackingService.FunctionalTests/Controllers/PixelsControllerTests.cs
new file mode 100644
index 00000000..80f41814
--- /dev/null
+++ b/services/ads-tracking-service-net/tests/AdsTrackingService.FunctionalTests/Controllers/PixelsControllerTests.cs
@@ -0,0 +1,44 @@
+using System.Net;
+using FluentAssertions;
+using Microsoft.AspNetCore.Mvc.Testing;
+using Xunit;
+
+namespace AdsTrackingService.FunctionalTests.Controllers;
+
+/// <summary>
+/// EN: Functional tests for tracking pixel and health endpoints.
+/// VI: Functional tests cho endpoint tracking pixel và health.
+/// </summary>
+public class PixelsControllerTests : IClassFixture<CustomWebApplicationFactory>
+{
+    private readonly HttpClient _client;
+
+    public PixelsControllerTests(CustomWebApplicationFactory factory)
+    {
+        _client = factory.CreateClient(new WebApplicationFactoryClientOptions
+        {
+            AllowAutoRedirect = false,
+        });
+    }
+
+    [Fact]
+    public async Task GetPixelCode_WithUnknownAdvertiser_ShouldReturnNotFound()
+    {
+        // Act
+        var response = await _client.GetAsync(
+            $"/api/v1/ads-tracking/pixels/{Guid.NewGuid()}");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.NotFound);
+    }
+
+    [Fact]
+    public async Task HealthCheck_ShouldReturnHealthy()
+    {
+        // Act
+        var response = await _client.GetAsync("/health/live");
+
+        // Assert
+        response.StatusCode.Should().Be(HttpStatusCode.OK);
+    }
+}
diff --git a/services/ads-tracking-service-net/tests/AdsTrackingService.FunctionalTests/Controllers/SamplesControllerTests.cs b/services/ads-tracking-service-net/tests/AdsTrackingService.FunctionalTests/Controllers/SamplesControllerTests.cs
deleted file mode 100644
index 5ae5f542..00000000
--- a/services/ads-tracking-service-net/tests/AdsTrackingService.FunctionalTests/Controllers/SamplesControllerTests.cs
+++ /dev/null
@@ -1,80 +0,0 @@
-using System.Net;
-using System.Net.Http.Json;
-using FluentAssertions;
-using Microsoft.AspNetCore.Mvc.Testing;
-using Xunit;
-
-namespace AdsTrackingService.FunctionalTests.Controllers;
-
-/// <summary>
-/// EN: Functional tests for Samples API endpoints.
-/// VI: Functional tests cho các endpoints API Samples.
-/// </summary>
-public class SamplesControllerTests : IClassFixture<CustomWebApplicationFactory>
-{
-    private readonly HttpClient _client;
-
-    public SamplesControllerTests(CustomWebApplicationFactory factory)
-    {
-        _client = factory.CreateClient(new WebApplicationFactoryClientOptions
-        {
-            AllowAutoRedirect = false
-        });
-    }
-
-    [Fact]
-    public async Task GetSamples_ShouldReturnOkWithEmptyList()
-    {
-        // Act
-        var response = await _client.GetAsync("/api/v1/samples");
-
-        // Assert
-        response.StatusCode.Should().Be(HttpStatusCode.OK);
-        var content = await response.Content.ReadFromJsonAsync<ApiResponse<List<object>>>();
-        content?.Success.Should().BeTrue();
-    }
-
-    [Fact]
-    public async Task CreateSample_WithValidData_ShouldReturnCreated()
-    {
-        // Arrange
-        var request = new { Name = "Test Sample", Description = "Test Description" };
-
-        // Act
-        var response = await _client.PostAsJsonAsync("/api/v1/samples", request);
-
-        // Assert
-        response.StatusCode.Should().Be(HttpStatusCode.Created);
-        var content = await response.Content.ReadFromJsonAsync<ApiResponse<CreateSampleResult>>();
-        content?.Success.Should().BeTrue();
-        content?.Data?.Id.Should().NotBeEmpty();
-    }
-
-    [Fact]
-    public async Task GetSample_WithInvalidId_ShouldReturnNotFound()
-    {
-        // Arrange
-        var invalidId = Guid.NewGuid();
-
-        // Act
-        var response = await _client.GetAsync($"/api/v1/samples/{invalidId}");
-
-        // Assert
-        response.StatusCode.Should().Be(HttpStatusCode.NotFound);
-    }
-
-    [Fact]
-    public async Task HealthCheck_ShouldReturnHealthy()
-    {
-        // Act
-        var response = await _client.GetAsync("/health/live");
-
-        // Assert
-        response.StatusCode.Should().Be(HttpStatusCode.OK);
-    }
-
-    // EN: Helper DTOs for deserialization
-    // VI: Helper DTOs để deserialize
-    private record ApiResponse<T>(bool Success, T? Data);
-    private record CreateSampleResult(Guid Id);
-}