What is the difference between services.AddAuthentication() and services.AddAuthorization() in asp net core?

Question

I have the following code and i want to understand what is the difference between those two extension methods. What each one do?

services.AddAuthentication (JwtBearerDefaults.AuthenticationScheme)
            .AddJwtBearer (options => options.TokenValidationParameters = new TokenValidationParameters {
                ValidateIssuer = true,
                    ValidateAudience = true,
                    ValidateLifetime = true,
                    ValidateIssuerSigningKey = true,
                    ClockSkew = TimeSpan.Zero,
                    ValidIssuer = Issuer,
                    ValidAudience = Audience,
                    IssuerSigningKey = new SymmetricSecurityKey(secret)
            });

            services.AddAuthorization();

Thanks,

Answer 1

If you know the differences between the terms, then maybe the best way to understand the differences between the methods is to look at the source code and see what services are registered.

AddAuthentication

AddAuthorization