Summary

In this chapter, you learned how to build your own REST Web API using the ASP.NET Core Web API template. You learned how to tackle the ever-growing complexity of configuration using bootstrap classes. You were introduced to the OpenAPI standard and Swagger, a tool used for calling an API to see whether it has successfully rendered the documentation. You also delved into mapping exceptions to specific HTTP status codes, along with how to map DTOs to domain objects and vice versa. In the second half of the chapter, you practiced securing the Web API using AAD, learned the concept of microservices, and created one yourself—both through a new dedicated Web API and through an Azure Function.

Knowing how to create and consume Web APIs is important because that's what most of the software development is all about. You either consume or create Web APIs at some point. Even if you don't have to create one yourself, grasping the ins and outs of it will help you...