Kotlin is a statically typed programming language that is designed to interoperate with Java and is aimed at improving developer productivity. Some key features of Kotlin include null safety, lambdas, type inference, and being more concise than Java. Kotlin is currently used by companies like Google, Amazon, and Netflix and compiles to JavaScript or native code allowing it to be used for web and mobile development. Its future includes further multiplatform support and use in areas like IoT and data analysis.