Tutorial from: https://docs.microsoft.com/en-us/learn/modules/build-web-api-net-core/

ASP.NET Core supports creating RESTful services, also known as web APIs, using C#. In this module, you'll learn how to create a web API supporting Create, Read, Update, Delete (CRUD) operations.

In this module, you will:

• Create a web API project with ASP.NET Core.
• Create an in-memory database for persisting products.
• Add support for CRUD operations.
• Test web API action methods from the command shell.