Is it possible to add two instances of GraphServiceClient via calls to AddMicrosoftGraph, one for calling on-behalf-of users and another for calling as the application itself?

[nlykkei]

Consider the following code:

  services.AddAuthentication(OpenIdConnectDefaults.AuthenticationScheme)
          .AddMicrosoftIdentityWebApp(Configuration, "AzureAd")
            .EnableTokenAcquisitionToCallDownstreamApi(new string[]{"user.read" })
               .AddMicrosoftGraph(Configuration.GetSection("GraphBeta"))
            .AddInMemoryTokenCaches();

I want two GraphServiceClients in my application - one for calling Microsoft Graph on-behalf-of users and another for calling it as the application itself.

More concretely, my current application has two abstractions, ISystemGraphService and IDelegatedGraphService:

    builder.Services.AddScoped<ISystemGraphService>(serviceProvider =>
    {
        var httpContextAccessor = serviceProvider.GetRequiredService<IHttpContextAccessor>();
        return new GraphService(new GraphServiceClient(serviceProvider.GetRequiredService<DefaultAzureCredential>()),
            httpContextAccessor, serviceProvider.GetRequiredService<IConfiguration>());
    });

    builder.Services.AddScoped<IDelegatedGraphService>(serviceProvider =>
    {
        var httpContextAccessor = serviceProvider.GetRequiredService<IHttpContextAccessor>();
        var httpContext = httpContextAccessor.HttpContext ?? new DefaultHttpContext();

        var tokenAcquisition = serviceProvider.GetRequiredService<ITokenAcquisition>();
        return new GraphService(new GraphServiceClient(new TokenAcquisitionTokenCredential(tokenAcquisition)), httpContextAccessor, serviceProvider.GetRequiredService<IConfiguration>());
    });

I don't want to create initialize the GraphServiceClients manually, but utilize the Microsoft.Identity.Web abstraction to initialize them via appsettings.json (e.g. AzureAd section).

The docs show how to use both Microsoft Graph and Microsoft Graph Beta simultaneously, but not two different instances of GraphServiceClients targeting the same Microsoft Graph API.

How can I use the Microsoft.Identity.Web to create my abstractions above?

https://learn.microsoft.com/en-us/entra/identity-platform/scenario-web-app-call-api-call-api?tabs=aspnetcore#option-1-call-microsoft-graph-with-the-sdk