What is the use of ARM EABI v7a System image in android?

Question

What for do we need ARM EABI v7a System image in Android development? What is the purpose of that particular image?

Answer 1

The system image is used by the emulator to virtualize the Android OS so Apps can be tested/debugged on a PC without the need to upload the App to a phone whenever a change in the code is made. This speeds up the development process and allows testing for phones that aren't physically available.