This Android Application Deployment Diagram is a UML deployment diagram that depicts the deployment of an app to Android. Android is a mobile software stack that includes an operating system, middleware, and key applications. When developing your first Android app, you must inform the developer about every aspect of the app's design. While most mobile app development companies explain everything in layman's terms, it is still important that you understand how Android app development works. The Android Application Deployment Diagram is the best way to understand the entire process.