APIs are essential for building modern web applications that can communicate with other systems and platforms. APIs expose backend data and functionality through a standardized interface that clients can use to access and manipulate resources. However, designing a robust and scalable API is not a trivial task. It requires a good understanding of API architecture, which is the technical framework of developing and maintaining a software interface. In this blog post, I will share a cheat sheet that can help establish a good understanding of API architecture is very handy for all backend developers.