Welcome to the "Using and Building APIs" category, where you'll unlock the power of Application Programming Interfaces (APIs). In this category, you'll learn how to leverage existing APIs to access external data and services, as well as how to build your own APIs to create efficient and scalable applications. Discover how APIs can enhance your programs, enable data integration, and facilitate seamless communication between different systems. The next two sections focus entirely on APIs. Let's delve into the content!