Google I/O 2026's Android-focused sessions continued the multi-year push to make Kotlin Multiplatform a fully production-ready path for sharing business logic across iOS and Android, building on the Jetpack library support for KMP that Google and JetBrains have been expanding release over release since it was first highlighted at Google I/O and KotlinConf in 2025. Kotlin Multiplatform's core pitch has always been narrower and more incremental than a full cross-platform UI framework like Flutter or React Native: rather than sharing UI code across platforms, KMP lets teams share the non-UI layers, networking, data persistence, business logic, validation, while keeping fully native UI on both iOS (SwiftUI or UIKit) and Android (Jetpack Compose). That narrower scope has made it an easier sell for teams with existing native codebases who want to reduce logic duplication without committing to a full cross-platform rewrite, but its practical usefulness has depended heavily on how much of the platform's standard library ecosystem, particularly Google's own Jetpack libraries for things like networking, data storage, and lifecycle management, actually works cleanly in a shared KMP module rather than requiring platform-specific workarounds. Continued expansion of Jetpack library KMP support at each I/O cycle is the concrete signal to track for teams evaluating whether KMP is mature enough to adopt: each additional first-class-supported library closes another gap that previously forced teams to write platform-specific shims, making the shared-logic approach viable for a progressively larger slice of a typical app's codebase.