In 2011, JetBrains introduced Project Kotlin, which is a fresh coding language for the popular JVM. According to Dmitry Jemerov, most languages didn’t have their desired features except Scala. Also, he said that the Scala has a shortcoming: it has a slow compilation time. The goal of Kotlin is to allow faster compilation like Java. In 2012, the project was marked open source by JetBrains under the license called Apache 2. JetBrains is hopeful that the language can drive the sales of IntelliJ IDEA. On February 15, Kotlin v1.0 was out. It is the first known stable release and features backward compatibility as well.