The Android Rom Builder is a self contained, Android OS Build Server on the AWS Cloud. It allows you to launch any size instance and build the Android Open Source Project. Depending on the instance size you choose, you can reduce compile times of the entire Android OS, and your custom ROM builds from hours to minutes. The entire AOSP build environment is fully configured, simply launch your instance, and start building! You'll save hours of configuration time and you can compile it only when you need it, while paying for only when you build! This eliminates the need to host a build environment on your own machine, or require the Linux OS and have the steep system requirements.