The idea is simple and not new use a single project to build an application targeting both mobile, web and backend. Multiplatform combines Kotlin for backend with Kotlin for Android and frontend and also the new possibility of using Kotlin for iOS applications. It gave us an insight at Jetbrains plans for the future. In 2017 Jetbrains went even further with the release of Kotlin Multiplatform in experimental form. Due to this, it's possible to use Kotlin for frontend applications. In 2013, Jetbrains also released Kotlin JS, making it possible to compile Kotlin to Javascript instead of Java bytecode. Making it possible to call Java classes from Kotlin and vice versa. In both backend and Android applications, Kotlin is compiled to Java bytecode. Kotlin is hot right now and has proven itself in practice. Kotlin is already widely used for backend and Android applications and has excellent integration with Spring Boot. Jetbrains, the brains behind this language, is putting a lot of time and effort in developing this language. Kotlin is a programming language on the rise.