The way that mobile applications are constructed these days is considerably different from a decade ago. Users today no longer only anticipate natural but also trendy, personalized, and consistent user experiences across devices. These expectations call for diverse sets of features, multiple form factors, diminishing cycle times, and the requirement for frictionless scalability. Traditional development patterns — static, monolithic codebases—are frequently not able to keep up. Introducing a new feature can be like doing surgery on a runaway train: risky, time-consuming, and likely to have side effects. Composable Architecture swoops in as the game-changer, offering the chance to build mobile applications that are flexible, testable, and modular from day one.