What does it really take to ship fast, modern Android apps that scale without falling apart? Jetpack Compose in Action is built for developers who want more than syntax walkthroughs. This book shows how real Android products are designed, built, optimized, and scaled using Jetpack Compose as the foundation. At its heart, it solves a common problem: teams adopt Compose, but struggle to structure large apps, manage state cleanly, and keep performance predictable as features grow. The focus is practical execution. Each project-driven chapter mirrors real production scenarios, from building complex UI flows to handling asynchronous data, navigation, theming, and performance tuning. You see how Compose fits into modern Android architecture, not as a demo tool, but as a system you can trust in serious applications. By the end, readers gain the ability to: Build production-ready UIs with Compose that stay readable and maintainable as codebases expand Apply state management, recomposition control, and side-effect handling without guesswork Structure apps using proven architectural patterns that support testing and long-term growth Optimize rendering, reduce unnecessary recompositions, and avoid common performance traps Scale real projects confidently, from first feature to mature app This book speaks directly to Android developers, Kotlin engineers, and mobile teams who want results, not abstractions. If you already know the basics and want to build faster, cleaner, and more resilient Compose apps, this is the missing piece. Get your copy and start building Android apps that hold up under real-world pressure.