Azure Functions Deep Dive

Chapter 2 moves from architectural concepts to working code. In the previous chapter, we looked at how distributed systems evolved and why serverless emerged as a practical response to growing operational complexity. Now we make that shift concrete by building a real Azure Functions application in .NET and using it as the foundation for the rest of the book. This chapter introduces the OrderProcessor project and develops it step by step. We will scaffold a Function App, run it locally, explore triggers and bindings, examine hosting and scaling behavior, and put the supporting pieces in place for real-world development, configuration, dependency injection, and testing. The code begins simply, but that is deliberate. By the end of the chapter, you will have a working serverless foundation that is ready to grow into the distributed system we will expand throughout the chapters ahead.