Blazor Authentication and Authorization

ASP.NET Core Identity Setup

// Program.cs
builder.Services.AddAuthentication(IdentityConstants.ApplicationScheme)
    .AddIdentityCookies();

builder.Services.AddAuthorizationBuilder()
    .AddPolicy("AdminOnly", policy => policy.RequireRole("Admin"))
    .AddPolicy("PremiumUser", policy => policy.RequireClaim("subscription", "premium"));