Building a web app begins by outlining user roles, main use cases, and the data structure. A strong MVP centers on essential flows, intuitive navigation, and reliable UI elements, enabling rapid release without evolving into a brittle collection of ad-hoc screens.

Post-launch, scalability and dependability take priority: performance budgets, caching strategies, secure login, and clear API agreements. With effective monitoring, continuous integration/delivery, and well-planned architecture, teams can iterate quickly while preserving codebase stability as features and traffic expand.