using Microsoft.Azure.Functions.Worker; using Microsoft.Extensions.DependencyInjection; using Microsoft.Extensions.Hosting; using MyProject.Interfaces; using MyProject.Services; var host = new HostBuilder() .ConfigureFunctionsWebApplication() .ConfigureServices(services => { services.AddApplicationInsightsTelemetryWorkerService(); services.ConfigureFunctionsApplicationInsights(); // Add the following line services.AddSingleton<IAuthService, AuthService>(); }) .Build(); host.Run();