hosting a asp.net mvc 5 website

If your other projects (e.g Web API/Services) exposes some public endpoints is which your web app depends, then you also need to publish them. If you otter projects is just a class library, then you just have to build them and reference the dll from your webapp and then just publish you web app.

 

See: https://www.c-sharpcorner.com/article/deploying-your-Asp-Net-mvc-5-app-to-iis-8/