Encourage use of Microsoft.Extensions.Azure for client registration

Author: scottaddie

docs/azure/sdk/includes/implement-defaultazurecredential.md

@@ -1,6 +1,6 @@
 ---
 ms.topic: include
-ms.date: 04/25/2025
+ms.date: 07/25/2025
 ---
 
 ## Authenticate to Azure services from your app
@@ -37,7 +37,3 @@ Azure services are accessed using specialized client classes from the various Az
 1. Pass an instance of `DefaultAzureCredential` to the `UseCredential` method.
 
 :::code language="csharp" source="../snippets/authentication/local-dev-account/Program.cs" id="snippet_DefaultAzureCredential_UseCredential":::
-
-An alternative to the `UseCredential` method is to provide the credential to the service client directly:
-
-:::code language="csharp" source="../snippets/authentication/local-dev-account/Program.cs" id="snippet_DefaultAzureCredential":::

docs/azure/sdk/includes/implement-service-principal.md

@@ -1,6 +1,6 @@
 ---
 ms.topic: include
-ms.date: 02/12/2025
+ms.date: 07/25/2025
 ---
 
 [!INCLUDE [implement-service-principal-concepts](implement-service-principal-concepts.md)]
@@ -34,7 +34,3 @@ Azure services are accessed using specialized client classes from the various Az
 1. Pass the `ClientSecretCredential` instance to the `UseCredential` method.
 
 :::code language="csharp" source="../snippets/authentication/local-dev-service-principal/Program.cs" id="snippet_ClientSecretCredential_UseCredential":::
-
-An alternative to the `UseCredential` method is to provide the credential to the service client directly:
-
-:::code language="csharp" source="../snippets/authentication/local-dev-service-principal/Program.cs" id="snippet_ClientSecretCredential":::

docs/azure/sdk/snippets/authentication/local-dev-account/Program.cs

@@ -1,7 +1,6 @@
 using Azure.Identity;
 using Microsoft.Extensions.Azure;
 using Azure.Storage.Blobs;
-using Azure.Core;
 
 var builder = WebApplication.CreateBuilder(args);
 
@@ -54,13 +53,6 @@ void registerUsingServicePrincipal(WebApplicationBuilder builder)
         clientBuilder.UseCredential(new DefaultAzureCredential());
     });
     #endregion snippet_DefaultAzureCredential_UseCredential
-
-    #region snippet_DefaultAzureCredential
-    builder.Services.AddSingleton<BlobServiceClient>(_ =>
-        new BlobServiceClient(
-            new Uri("https://<account-name>.blob.core.windows.net"),
-            new DefaultAzureCredential()));
-    #endregion snippet_DefaultAzureCredential
 }
 
 internal record WeatherForecast(DateOnly Date, int TemperatureC, string? Summary)

docs/azure/sdk/snippets/authentication/local-dev-service-principal/Program.cs

@@ -1,7 +1,6 @@
 using Azure.Identity;
 using Microsoft.Extensions.Azure;
 using Azure.Storage.Blobs;
-using Azure.Core;
 
 var builder = WebApplication.CreateBuilder(args);
 
@@ -58,17 +57,6 @@ void registerUsingServicePrincipal(WebApplicationBuilder builder)
         clientBuilder.UseCredential(new ClientSecretCredential(tenantId, clientId, clientSecret));
     });
     #endregion snippet_ClientSecretCredential_UseCredential
-
-    #region snippet_ClientSecretCredential
-    var tenantId = Environment.GetEnvironmentVariable("AZURE_TENANT_ID");
-    var clientId = Environment.GetEnvironmentVariable("AZURE_CLIENT_ID");
-    var clientSecret = Environment.GetEnvironmentVariable("AZURE_CLIENT_SECRET");
-
-    builder.Services.AddSingleton<BlobServiceClient>(_ =>
-        new BlobServiceClient(
-            new Uri("https://<account-name>.blob.core.windows.net"),
-            new ClientSecretCredential(tenantId, clientId, clientSecret)));
-    #endregion snippet_ClientSecretCredential
 }
 
 internal record WeatherForecast(DateOnly Date, int TemperatureC, string? Summary)