title: What is the purpose of adding services.AddMvc() in the ConfigureServices method in mvc 6?
body: <p>Why is not enought to just add app.UseMvc() in the Configuration method in a mvc6 application? why it is also necessary to add the services.AddMvc() in the ConfigureServices method? and where can I find more info about this?</p>
  
  <p>Thank you.</p>