Building a web app begins by outlining user roles, essential use cases, and the data structure. A strong MVP centers on essential paths, intuitive navigation, and consistent UI elements, enabling rapid delivery without becoming a brittle collection of ad-hoc screens.

Post-launch, scalability and reliability take precedence: performance budgets, caching strategies, secure login, and clean API interfaces. Through effective monitoring, CI/CD, and well-planned architecture, teams can iterate more quickly while maintaining code stability as features and load expand.