Kotlin is a modern, general-purpose programming language developed by JetBrains. It supports code compiled for Java Virtual Machine (JVM), Android, JavaScript, and Native platforms. Kotlin is an open-source language introduced in 2011, with its first version released in 2017. The goal of Kotlin is to provide the powerful and comprehensive features offered by Java in a simpler and more concise syntax.
Kotlin aims not to replace Java but to offer a modern and powerful alternative to Java developers. It has become increasingly popular, especially in the field of Android app development, and many major companies (such as Google) prefer Kotlin.