Jetpack Compose is a modern UI framework for building Android apps, simplifying the development process with a declarative programming model and seamless integration with existing Android architecture components. As a key component of Android's evolving ecosystem, Jetpack Compose enables developers to create visually appealing, responsive, and maintainable user interfaces, making it a crucial tool for Android developers looking to streamline their app development workflow and stay up-to-date with the latest Android best practices.