Explore the evolution of Kotlin language support in IntelliJ IDEA through this 51-minute conference talk by JetBrains. Discover key milestones, lessons learned, and positive changes in the IDE as Kotlin became a first-class citizen. Learn about platform communication, XDebugger, language injection, IntelliJ hints, Java to Kotlin conversion, build server protocol, plugin influence, deprecation policy, interoperability, light classes, phrases, syntax, and unified AST. Gain insights from speakers Volodya Dolzhenko and Anton Yalyshev as they share their experiences and technical solutions in developing Kotlin support for IntelliJ IDEA.