Kotlin Multiplatform for Mobile (KMM) is a way to simplify the development of cross-platform applications. You can share the application logic between iOS and Android apps and write platform-specific code only when you need to implement a native UI or work with platform APIs. Explore what is KMM as a platform, set up your development environment, and therefore build your first KMM app that runs on both iOS and Android platforms with a shared code base. Get familiar with the KMM project structure to kickstart your journey as an app developer in KMM.