Bazel (pronounced like the tasty herb: “bay-zell”) is an universal build tool developed by Google. Some notable companies like Twitter and projects like the Android Open Source project have migrated to Bazel. In this tutorial, you will learn how to build a Bazel Android project and set it up for continuous integration with CircleCI. We will wrap up by automatically running tests and producing a binary APK file. In addition to the written guide there is a working sample project.

AWS Lambda is a serverless compute service that lets you run code without provisioning or managing servers. It is great if you want to create a cost-effective, on-demand service. You can use it as part of a bigger project where you have multiple services or as a standalone service to do a certain task like controlling Alexa Skill.