diff --git a/src/Components/Web/src/EnvironmentBoundary.cs b/src/Components/Web/src/EnvironmentBoundary.cs
new file mode 100644
index 000000000000..2ef9bdb52476
--- /dev/null
+++ b/src/Components/Web/src/EnvironmentBoundary.cs
@@ -0,0 +1,143 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using Microsoft.AspNetCore.Components.Rendering;
+using Microsoft.Extensions.Hosting;
+
+namespace Microsoft.AspNetCore.Components.Web;
+
+/// <summary>
+/// A component that renders its child content only when the current hosting environment
+/// matches one of the specified environment names.
+/// </summary>
+/// <remarks>
+/// <para>
+/// This component is similar to the environment tag helper in MVC and Razor Pages.
+/// </para>
+/// <example>
+/// The following example shows how to conditionally render content based on the environment:
+/// <code>
+/// &lt;EnvironmentBoundary Include="Development"&gt;
+///     &lt;div class="alert alert-warning"&gt;
+///         You are running in Development mode. Debug features are enabled.
+///     &lt;/div&gt;
+/// &lt;/EnvironmentBoundary&gt;
+///
+/// &lt;EnvironmentBoundary Include="Development, Staging"&gt;
+///     &lt;p&gt;This is a pre-production environment.&lt;/p&gt;
+/// &lt;/EnvironmentBoundary&gt;
+///
+/// &lt;EnvironmentBoundary Exclude="Production"&gt;
+///     &lt;p&gt;Debug information: @DateTime.Now&lt;/p&gt;
+/// &lt;/EnvironmentBoundary&gt;
+/// </code>
+/// </example>
+/// </remarks>
+public sealed class EnvironmentBoundary : ComponentBase
+{
+    private static readonly char[] NameSeparator = [','];
+
+    [Inject]
+    private IHostEnvironment HostEnvironment { get; set; } = default!;
+
+    /// <summary>
+    /// Gets or sets a comma-separated list of environment names in which the content should be rendered.
+    /// If the current environment is also in the <see cref="Exclude"/> list, the content will not be rendered.
+    /// </summary>
+    /// <remarks>
+    /// The specified environment names are compared case insensitively.
+    /// </remarks>
+    [Parameter]
+    public string? Include { get; set; }
+
+    /// <summary>
+    /// Gets or sets a comma-separated list of environment names in which the content will not be rendered.
+    /// </summary>
+    /// <remarks>
+    /// The specified environment names are compared case insensitively.
+    /// </remarks>
+    [Parameter]
+    public string? Exclude { get; set; }
+
+    /// <summary>
+    /// Gets or sets the content to be rendered when the environment matches.
+    /// </summary>
+    [Parameter]
+    public RenderFragment? ChildContent { get; set; }
+
+    /// <inheritdoc />
+    protected override void BuildRenderTree(RenderTreeBuilder builder)
+    {
+        if (ShouldRenderContent())
+        {
+            builder.AddContent(0, ChildContent);
+        }
+    }
+
+    private bool ShouldRenderContent()
+    {
+        var currentEnvironmentName = HostEnvironment.EnvironmentName?.Trim();
+
+        if (string.IsNullOrEmpty(currentEnvironmentName))
+        {
+            // For consistency with MVC EnvironmentTagHelper, render content when environment name is not set
+            // and no Include/Exclude are specified.
+            if (string.IsNullOrWhiteSpace(Include) && string.IsNullOrWhiteSpace(Exclude))
+            {
+                return true;
+            }
+
+            return false;
+        }
+
+        // Check exclusions first - if current environment is excluded, don't render
+        if (!string.IsNullOrWhiteSpace(Exclude))
+        {
+            foreach (var environment in ParseEnvironmentNames(Exclude))
+            {
+                if (environment.Equals(currentEnvironmentName, StringComparison.OrdinalIgnoreCase))
+                {
+                    return false;
+                }
+            }
+        }
+
+        // If no inclusions specified, render (unless excluded above)
+        if (string.IsNullOrWhiteSpace(Include))
+        {
+            return true;
+        }
+
+        // Check if current environment is in the include list
+        var hasEnvironments = false;
+        foreach (var environment in ParseEnvironmentNames(Include))
+        {
+            hasEnvironments = true;
+            if (environment.Equals(currentEnvironmentName, StringComparison.OrdinalIgnoreCase))
+            {
+                return true;
+            }
+        }
+
+        // If Include was specified but contained no valid environments, render content
+        // (same behavior as when Include is not specified)
+        if (!hasEnvironments)
+        {
+            return true;
+        }
+
+        return false;
+    }
+
+    private static IEnumerable<string> ParseEnvironmentNames(string names)
+    {
+        foreach (var segment in names.Split(NameSeparator, StringSplitOptions.RemoveEmptyEntries))
+        {
+            var trimmed = segment.Trim();
+            if (trimmed.Length > 0)
+            {
+                yield return trimmed;
+            }
+        }
+    }
+}
diff --git a/src/Components/Web/src/Microsoft.AspNetCore.Components.Web.csproj b/src/Components/Web/src/Microsoft.AspNetCore.Components.Web.csproj
index 495a5b7529aa..294881d45b9b 100644
--- a/src/Components/Web/src/Microsoft.AspNetCore.Components.Web.csproj
+++ b/src/Components/Web/src/Microsoft.AspNetCore.Components.Web.csproj
@@ -23,6 +23,7 @@
     <Reference Include="Microsoft.AspNetCore.Components" />
     <Reference Include="Microsoft.AspNetCore.Components.Forms" />
     <Reference Include="Microsoft.Extensions.DependencyInjection" />
+    <Reference Include="Microsoft.Extensions.Hosting.Abstractions" />
     <Reference Include="Microsoft.Extensions.Primitives" />
     <Reference Include="Microsoft.JSInterop" />
   </ItemGroup>
diff --git a/src/Components/Web/src/PublicAPI.Unshipped.txt b/src/Components/Web/src/PublicAPI.Unshipped.txt
index 369f33715778..8a2990b22bfa 100644
--- a/src/Components/Web/src/PublicAPI.Unshipped.txt
+++ b/src/Components/Web/src/PublicAPI.Unshipped.txt
@@ -1,4 +1,12 @@
 #nullable enable
+Microsoft.AspNetCore.Components.Web.EnvironmentBoundary
+Microsoft.AspNetCore.Components.Web.EnvironmentBoundary.ChildContent.get -> Microsoft.AspNetCore.Components.RenderFragment?
+Microsoft.AspNetCore.Components.Web.EnvironmentBoundary.ChildContent.set -> void
+Microsoft.AspNetCore.Components.Web.EnvironmentBoundary.EnvironmentBoundary() -> void
+Microsoft.AspNetCore.Components.Web.EnvironmentBoundary.Exclude.get -> string?
+Microsoft.AspNetCore.Components.Web.EnvironmentBoundary.Exclude.set -> void
+Microsoft.AspNetCore.Components.Web.EnvironmentBoundary.Include.get -> string?
+Microsoft.AspNetCore.Components.Web.EnvironmentBoundary.Include.set -> void
 Microsoft.AspNetCore.Components.Web.Media.FileDownload
 Microsoft.AspNetCore.Components.Web.Media.FileDownload.ChildContent.get -> Microsoft.AspNetCore.Components.RenderFragment<Microsoft.AspNetCore.Components.Web.Media.FileDownloadContext!>?
 Microsoft.AspNetCore.Components.Web.Media.FileDownload.ChildContent.set -> void
diff --git a/src/Components/Web/test/EnvironmentBoundaryTest.cs b/src/Components/Web/test/EnvironmentBoundaryTest.cs
new file mode 100644
index 000000000000..95e1aa901705
--- /dev/null
+++ b/src/Components/Web/test/EnvironmentBoundaryTest.cs
@@ -0,0 +1,280 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using Microsoft.AspNetCore.Components.Rendering;
+using Microsoft.AspNetCore.Components.Test.Helpers;
+using Microsoft.AspNetCore.Components.Web;
+using Microsoft.Extensions.Hosting;
+using Moq;
+
+namespace Microsoft.AspNetCore.Components;
+
+public class EnvironmentBoundaryTest
+{
+    [Theory]
+    [InlineData("Development", "Development")]
+    [InlineData("development", "Development")]
+    [InlineData("DEVELOPMENT", "Development")]
+    [InlineData(" development", "Development")]
+    [InlineData("development ", "Development")]
+    [InlineData(" development ", "Development")]
+    [InlineData("Development,Production", "Development")]
+    [InlineData("Production,Development", "Development")]
+    [InlineData("Development , Production", "Development")]
+    [InlineData("   Development,Production   ", "Development")]
+    [InlineData("Development ,  Production", "Development")]
+    [InlineData("Development\t,Production", "Development")]
+    [InlineData("Development,\tProduction", "Development")]
+    [InlineData(" Development,Production ", "Development")]
+    [InlineData("Development,Staging,Production", "Development")]
+    [InlineData("Staging,Development,Production", "Development")]
+    [InlineData("Staging,Production,Development", "Development")]
+    [InlineData("Test", "Test")]
+    [InlineData("Test,Staging", "Test")]
+    public void ShowsContentWhenCurrentEnvironmentIsInIncludeList(string includeAttribute, string environmentName)
+    {
+        ShouldShowContentWithInclude(includeAttribute, environmentName);
+    }
+
+    [Theory]
+    [InlineData("NotDevelopment", "Development")]
+    [InlineData("NOTDEVELOPMENT", "Development")]
+    [InlineData("NotDevelopment,AlsoNotDevelopment", "Development")]
+    [InlineData("Doesn'tMatchAtAll", "Development")]
+    [InlineData("Development and a space", "Development")]
+    [InlineData("Development and a space,SomethingElse", "Development")]
+    public void HidesContentWhenCurrentEnvironmentIsNotInIncludeList(string includeAttribute, string environmentName)
+    {
+        ShouldHideContentWithInclude(includeAttribute, environmentName);
+    }
+
+    [Theory]
+    [InlineData(null, "Development")]
+    [InlineData("", "Development")]
+    [InlineData("  ", "Development")]
+    [InlineData(", ", "Development")]
+    [InlineData(",", "Development")]
+    public void ShowsContentWhenNoIncludeOrExcludeIsSpecified(string includeAttribute, string environmentName)
+    {
+        // When no Include is specified and Exclude is not specified or empty,
+        // the component should render its content
+        var (renderer, componentId) = CreateEnvironmentBoundaryComponent(environmentName);
+
+        var parameters = ParameterView.FromDictionary(new Dictionary<string, object>
+        {
+            { nameof(EnvironmentBoundary.Include), includeAttribute },
+            { nameof(EnvironmentBoundary.ChildContent), (RenderFragment)(builder => builder.AddContent(0, "Test Content")) },
+        });
+
+        renderer.RenderRootComponent(componentId, parameters);
+
+        var batch = renderer.Batches.Single();
+        Assert.Contains(batch.ReferenceFrames, frame =>
+            frame.FrameType == RenderTree.RenderTreeFrameType.Text &&
+            frame.TextContent == "Test Content");
+    }
+
+    [Theory]
+    [InlineData("Production", "Development")]
+    [InlineData("production", "Development")]
+    [InlineData("PRODUCTION", "Development")]
+    [InlineData("Production,Staging", "Development")]
+    public void ShowsContentWhenCurrentEnvironmentIsNotInExcludeList(string excludeAttribute, string environmentName)
+    {
+        var (renderer, componentId) = CreateEnvironmentBoundaryComponent(environmentName);
+
+        var parameters = ParameterView.FromDictionary(new Dictionary<string, object>
+        {
+            { nameof(EnvironmentBoundary.Exclude), excludeAttribute },
+            { nameof(EnvironmentBoundary.ChildContent), (RenderFragment)(builder => builder.AddContent(0, "Test Content")) },
+        });
+
+        renderer.RenderRootComponent(componentId, parameters);
+
+        var batch = renderer.Batches.Single();
+        Assert.Contains(batch.ReferenceFrames, frame =>
+            frame.FrameType == RenderTree.RenderTreeFrameType.Text &&
+            frame.TextContent == "Test Content");
+    }
+
+    [Theory]
+    [InlineData("Development", "Development")]
+    [InlineData("development", "Development")]
+    [InlineData("DEVELOPMENT", "Development")]
+    [InlineData("Development,Staging", "Development")]
+    [InlineData("Production,Development", "Development")]
+    public void HidesContentWhenCurrentEnvironmentIsInExcludeList(string excludeAttribute, string environmentName)
+    {
+        var (renderer, componentId) = CreateEnvironmentBoundaryComponent(environmentName);
+
+        var parameters = ParameterView.FromDictionary(new Dictionary<string, object>
+        {
+            { nameof(EnvironmentBoundary.Exclude), excludeAttribute },
+            { nameof(EnvironmentBoundary.ChildContent), (RenderFragment)(builder => builder.AddContent(0, "Test Content")) },
+        });
+
+        renderer.RenderRootComponent(componentId, parameters);
+
+        var batch = renderer.Batches.Single();
+        Assert.DoesNotContain(batch.ReferenceFrames, frame =>
+            frame.FrameType == RenderTree.RenderTreeFrameType.Text &&
+            frame.TextContent == "Test Content");
+    }
+
+    [Theory]
+    [InlineData("Development", "Development", "Development")] // In include, also in exclude -> hide
+    [InlineData("Development,Staging", "Staging", "Staging")] // In include, also in exclude -> hide
+    public void ExcludeTakesPrecedenceOverInclude(string includeAttribute, string excludeAttribute, string environmentName)
+    {
+        var (renderer, componentId) = CreateEnvironmentBoundaryComponent(environmentName);
+
+        var parameters = ParameterView.FromDictionary(new Dictionary<string, object>
+        {
+            { nameof(EnvironmentBoundary.Include), includeAttribute },
+            { nameof(EnvironmentBoundary.Exclude), excludeAttribute },
+            { nameof(EnvironmentBoundary.ChildContent), (RenderFragment)(builder => builder.AddContent(0, "Test Content")) },
+        });
+
+        renderer.RenderRootComponent(componentId, parameters);
+
+        var batch = renderer.Batches.Single();
+        Assert.DoesNotContain(batch.ReferenceFrames, frame =>
+            frame.FrameType == RenderTree.RenderTreeFrameType.Text &&
+            frame.TextContent == "Test Content");
+    }
+
+    [Theory]
+    [InlineData("Development", "Production", "Development")] // In include, not in exclude -> show
+    [InlineData("Development,Staging", "Production", "Staging")] // In include, not in exclude -> show
+    public void ShowsContentWhenInIncludeButNotInExclude(string includeAttribute, string excludeAttribute, string environmentName)
+    {
+        var (renderer, componentId) = CreateEnvironmentBoundaryComponent(environmentName);
+
+        var parameters = ParameterView.FromDictionary(new Dictionary<string, object>
+        {
+            { nameof(EnvironmentBoundary.Include), includeAttribute },
+            { nameof(EnvironmentBoundary.Exclude), excludeAttribute },
+            { nameof(EnvironmentBoundary.ChildContent), (RenderFragment)(builder => builder.AddContent(0, "Test Content")) },
+        });
+
+        renderer.RenderRootComponent(componentId, parameters);
+
+        var batch = renderer.Batches.Single();
+        Assert.Contains(batch.ReferenceFrames, frame =>
+            frame.FrameType == RenderTree.RenderTreeFrameType.Text &&
+            frame.TextContent == "Test Content");
+    }
+
+    [Theory]
+    [InlineData(null)]
+    [InlineData("")]
+    [InlineData(" ")]
+    [InlineData("  ")]
+    [InlineData("\t")]
+    public void HidesContentWhenEnvironmentNameIsNullOrEmpty(string environmentName)
+    {
+        var (renderer, componentId) = CreateEnvironmentBoundaryComponent(environmentName);
+
+        var parameters = ParameterView.FromDictionary(new Dictionary<string, object>
+        {
+            { nameof(EnvironmentBoundary.Include), "Development" },
+            { nameof(EnvironmentBoundary.ChildContent), (RenderFragment)(builder => builder.AddContent(0, "Test Content")) },
+        });
+
+        renderer.RenderRootComponent(componentId, parameters);
+
+        var batch = renderer.Batches.Single();
+        Assert.DoesNotContain(batch.ReferenceFrames, frame =>
+            frame.FrameType == RenderTree.RenderTreeFrameType.Text &&
+            frame.TextContent == "Test Content");
+    }
+
+    [Theory]
+    [InlineData(null)]
+    [InlineData("")]
+    [InlineData(" ")]
+    public void ShowsContentWhenEnvironmentNameIsNullOrEmptyAndNoIncludeExcludeSpecified(string environmentName)
+    {
+        // For consistency with MVC EnvironmentTagHelper, render content when environment name is not set
+        // and no Include/Exclude are specified.
+        var (renderer, componentId) = CreateEnvironmentBoundaryComponent(environmentName);
+
+        var parameters = ParameterView.FromDictionary(new Dictionary<string, object>
+        {
+            { nameof(EnvironmentBoundary.ChildContent), (RenderFragment)(builder => builder.AddContent(0, "Test Content")) },
+        });
+
+        renderer.RenderRootComponent(componentId, parameters);
+
+        var batch = renderer.Batches.Single();
+        Assert.Contains(batch.ReferenceFrames, frame =>
+            frame.FrameType == RenderTree.RenderTreeFrameType.Text &&
+            frame.TextContent == "Test Content");
+    }
+
+    [Fact]
+    public void RendersNothingWhenChildContentIsNull()
+    {
+        var (renderer, componentId) = CreateEnvironmentBoundaryComponent("Development");
+
+        var parameters = ParameterView.FromDictionary(new Dictionary<string, object>
+        {
+            { nameof(EnvironmentBoundary.Include), "Development" },
+        });
+
+        renderer.RenderRootComponent(componentId, parameters);
+
+        var batch = renderer.Batches.Single();
+        Assert.DoesNotContain(batch.ReferenceFrames, f => f.FrameType == RenderTree.RenderTreeFrameType.Text);
+    }
+
+    private void ShouldShowContentWithInclude(string includeAttribute, string environmentName)
+    {
+        var (renderer, componentId) = CreateEnvironmentBoundaryComponent(environmentName);
+
+        var parameters = ParameterView.FromDictionary(new Dictionary<string, object>
+        {
+            { nameof(EnvironmentBoundary.Include), includeAttribute },
+            { nameof(EnvironmentBoundary.ChildContent), (RenderFragment)(builder => builder.AddContent(0, "Test Content")) },
+        });
+
+        renderer.RenderRootComponent(componentId, parameters);
+
+        var batch = renderer.Batches.Single();
+        Assert.Contains(batch.ReferenceFrames, frame =>
+            frame.FrameType == RenderTree.RenderTreeFrameType.Text &&
+            frame.TextContent == "Test Content");
+    }
+
+    private void ShouldHideContentWithInclude(string includeAttribute, string environmentName)
+    {
+        var (renderer, componentId) = CreateEnvironmentBoundaryComponent(environmentName);
+
+        var parameters = ParameterView.FromDictionary(new Dictionary<string, object>
+        {
+            { nameof(EnvironmentBoundary.Include), includeAttribute },
+            { nameof(EnvironmentBoundary.ChildContent), (RenderFragment)(builder => builder.AddContent(0, "Test Content")) },
+        });
+
+        renderer.RenderRootComponent(componentId, parameters);
+
+        var batch = renderer.Batches.Single();
+        Assert.DoesNotContain(batch.ReferenceFrames, frame =>
+            frame.FrameType == RenderTree.RenderTreeFrameType.Text &&
+            frame.TextContent == "Test Content");
+    }
+
+    private static (TestRenderer Renderer, int ComponentId) CreateEnvironmentBoundaryComponent(string environmentName)
+    {
+        var serviceProvider = new TestServiceProvider();
+        var hostEnvironment = new Mock<IHostEnvironment>();
+        hostEnvironment.SetupProperty(h => h.EnvironmentName, environmentName);
+        serviceProvider.AddService<IHostEnvironment>(hostEnvironment.Object);
+
+        var renderer = new TestRenderer(serviceProvider);
+        var component = (EnvironmentBoundary)renderer.InstantiateComponent<EnvironmentBoundary>();
+        var componentId = renderer.AssignRootComponentId(component);
+
+        return (renderer, componentId);
+    }
+}
diff --git a/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostBuilder.cs b/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostBuilder.cs
index c9971669d6c0..bacd10097d9c 100644
--- a/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostBuilder.cs
+++ b/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostBuilder.cs
@@ -15,6 +15,7 @@
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Configuration.Json;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 using Microsoft.JSInterop;
 using static Microsoft.AspNetCore.Internal.LinkerFlags;
@@ -185,6 +186,7 @@ private WebAssemblyHostEnvironment InitializeEnvironment()
         var hostEnvironment = new WebAssemblyHostEnvironment(applicationEnvironment, WebAssemblyNavigationManager.Instance.BaseUri);
 
         Services.AddSingleton<IWebAssemblyHostEnvironment>(hostEnvironment);
+        Services.AddSingleton<IHostEnvironment>(sp => new WebAssemblyHostEnvironmentAdapter(sp.GetRequiredService<IWebAssemblyHostEnvironment>()));
 
         var configFiles = new[]
         {
diff --git a/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostEnvironmentAdapter.cs b/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostEnvironmentAdapter.cs
new file mode 100644
index 000000000000..bfa262f70c2d
--- /dev/null
+++ b/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostEnvironmentAdapter.cs
@@ -0,0 +1,41 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using Microsoft.Extensions.FileProviders;
+using Microsoft.Extensions.Hosting;
+
+namespace Microsoft.AspNetCore.Components.WebAssembly.Hosting;
+
+internal sealed class WebAssemblyHostEnvironmentAdapter : IHostEnvironment
+{
+    private readonly IWebAssemblyHostEnvironment _webAssemblyHostEnvironment;
+
+    public WebAssemblyHostEnvironmentAdapter(IWebAssemblyHostEnvironment webAssemblyHostEnvironment)
+    {
+        _webAssemblyHostEnvironment = webAssemblyHostEnvironment;
+    }
+
+    public string EnvironmentName
+    {
+        get => _webAssemblyHostEnvironment.Environment;
+        set => throw new NotSupportedException("Setting the environment name is not supported in WebAssembly.");
+    }
+
+    public string ApplicationName
+    {
+        get => string.Empty;
+        set => throw new NotSupportedException("Setting the application name is not supported in WebAssembly.");
+    }
+
+    public string ContentRootPath
+    {
+        get => string.Empty;
+        set => throw new NotSupportedException("Setting the content root path is not supported in WebAssembly.");
+    }
+
+    public IFileProvider ContentRootFileProvider
+    {
+        get => new NullFileProvider();
+        set => throw new NotSupportedException("Setting the content root file provider is not supported in WebAssembly.");
+    }
+}
diff --git a/src/Components/test/E2ETest/Tests/EnvironmentBoundaryTest.cs b/src/Components/test/E2ETest/Tests/EnvironmentBoundaryTest.cs
new file mode 100644
index 000000000000..96587c035aad
--- /dev/null
+++ b/src/Components/test/E2ETest/Tests/EnvironmentBoundaryTest.cs
@@ -0,0 +1,74 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using BasicTestApp;
+using Microsoft.AspNetCore.Components.E2ETest.Infrastructure;
+using Microsoft.AspNetCore.Components.E2ETest.Infrastructure.ServerFixtures;
+using Microsoft.AspNetCore.E2ETesting;
+using OpenQA.Selenium;
+using Xunit.Abstractions;
+
+namespace Microsoft.AspNetCore.Components.E2ETest.Tests;
+
+public class EnvironmentBoundaryTest : ServerTestBase<ToggleExecutionModeServerFixture<Program>>
+{
+    public EnvironmentBoundaryTest(
+        BrowserFixture browserFixture,
+        ToggleExecutionModeServerFixture<Program> serverFixture,
+        ITestOutputHelper output)
+        : base(browserFixture, serverFixture, output)
+    {
+    }
+
+    protected override void InitializeAsyncCore()
+    {
+        Navigate(ServerPathBase);
+        Browser.MountTestComponent<EnvironmentBoundaryContainer>();
+    }
+
+    [Fact]
+    public void RendersContentWhenEnvironmentMatches()
+    {
+        // Wait for the component to render and verify it's in Development
+        var currentEnvElement = Browser.Exists(By.Id("current-environment"));
+        Browser.Contains("Development", () => currentEnvElement.Text);
+
+        var container = Browser.Exists(By.Id("environment-boundary-test"));
+
+        // Verify Development-specific content is visible
+        var devContent = container.FindElement(By.Id("dev-only-content"));
+        Assert.Equal("This content is only visible in Development.", devContent.Text);
+
+        // Verify non-production content is visible (we're in Development)
+        var nonProdContent = container.FindElement(By.Id("non-production-content"));
+        Assert.Equal("This content is visible in all environments except Production.", nonProdContent.Text);
+
+        // Verify Development+Staging content is visible
+        var devStagingContent = container.FindElement(By.Id("dev-staging-content"));
+        Assert.Equal("This content is visible in Development and Staging.", devStagingContent.Text);
+    }
+
+    [Fact]
+    public void HidesContentWhenEnvironmentDoesNotMatch()
+    {
+        // Wait for the component to render and verify it's in Development
+        var currentEnvElement = Browser.Exists(By.Id("current-environment"));
+        Browser.Contains("Development", () => currentEnvElement.Text);
+
+        var container = Browser.Exists(By.Id("environment-boundary-test"));
+
+        // Production-only content should not be visible in Development
+        Browser.DoesNotExist(By.Id("prod-only-content"));
+
+        // Content excluded from Development should not be visible
+        Browser.DoesNotExist(By.Id("non-dev-content"));
+    }
+
+    [Fact]
+    public void DisplaysCurrentEnvironment()
+    {
+        // Verify the environment is displayed correctly
+        var currentEnvElement = Browser.Exists(By.Id("current-environment"));
+        Browser.Contains("Development", () => currentEnvElement.Text);
+    }
+}
diff --git a/src/Components/test/testassets/BasicTestApp/EnvironmentBoundaryContainer.razor b/src/Components/test/testassets/BasicTestApp/EnvironmentBoundaryContainer.razor
new file mode 100644
index 000000000000..015a1bd342b4
--- /dev/null
+++ b/src/Components/test/testassets/BasicTestApp/EnvironmentBoundaryContainer.razor
@@ -0,0 +1,42 @@
+@using Microsoft.AspNetCore.Components.Web
+
+<h1>Environment Boundary Test</h1>
+
+<div id="environment-boundary-test">
+    <EnvironmentBoundary Include="Development">
+        <div id="dev-only-content" class="visible">
+            This content is only visible in Development.
+        </div>
+    </EnvironmentBoundary>
+
+    <EnvironmentBoundary Exclude="Production">
+        <div id="non-production-content" class="visible">
+            This content is visible in all environments except Production.
+        </div>
+    </EnvironmentBoundary>
+
+    <EnvironmentBoundary Include="Development, Staging">
+        <div id="dev-staging-content" class="visible">
+            This content is visible in Development and Staging.
+        </div>
+    </EnvironmentBoundary>
+
+    <EnvironmentBoundary Include="Production">
+        <div id="prod-only-content" class="visible">
+            This content is only visible in Production.
+        </div>
+    </EnvironmentBoundary>
+
+    <EnvironmentBoundary Exclude="Development">
+        <div id="non-dev-content" class="visible">
+            This content is visible in all environments except Development.
+        </div>
+    </EnvironmentBoundary>
+</div>
+
+<p id="current-environment">Current Environment: @HostEnvironment.EnvironmentName</p>
+
+@code {
+    [Inject]
+    public Microsoft.Extensions.Hosting.IHostEnvironment HostEnvironment { get; set; } = default!;
+}
diff --git a/src/Components/test/testassets/BasicTestApp/Index.razor b/src/Components/test/testassets/BasicTestApp/Index.razor
index f9cc718f7ca1..0b02a85af02c 100644
--- a/src/Components/test/testassets/BasicTestApp/Index.razor
+++ b/src/Components/test/testassets/BasicTestApp/Index.razor
@@ -31,6 +31,7 @@
         <option value="BasicTestApp.DynamicComponentRendering">DynamicComponent rendering</option>
         <option value="BasicTestApp.ElementFocusComponent">Element focus component</option>
         <option value="BasicTestApp.ElementRefComponent">Element ref component</option>
+        <option value="BasicTestApp.EnvironmentBoundaryContainer">Environment boundary</option>
         <option value="BasicTestApp.ErrorComponent">Error throwing</option>
         <option value="BasicTestApp.ErrorBoundaryTest.ErrorBoundaryContainer">Error boundary cases</option>
         <option value="BasicTestApp.EventBubblingComponent">Event bubbling</option>