Kotlin is a statically typed programming language developed by JetBrains, designed to be fully interoperable with Java. It is concise, expressive, and aims to improve developer productivity. Kotlin is officially supported for Android development.

Coroutines are a Kotlin feature that allows you to write asynchronous, non-blocking code. They simplify concurrent programming by providing a way to pause and resume execution at a later time, making it easier to handle tasks like network calls or I/O operations.

Yes, Kotlin is officially supported for Android development and is recommended by Google. It is fully interoperable with Java, allowing developers to use both languages in the same project.