Kotlin Multiplatform

Kotlin Multiplatform is a feature in Kotlin allowing code to run on multiple platforms (iOS, Android, web, desktop) without modification. Write business logic once in Kotlin (shared module), platform-specific UI in native languages (Swift for iOS, Kotlin for Android, JavaScript for web). The architecture separates concerns: domain models, networking, persistence (shared), UI frameworks (platform-specific). Gradle builds native binaries for each platform using the Kotlin compiler's multiple backends (JVM for Android, native for iOS, JavaScript for web).