Building a web app begins by outlining user roles, essential use cases, and the data structure. A strong MVP concentrates on main workflows, intuitive navigation, and consistent UI elements, enabling rapid delivery without evolving into a fragile collection of isolated screens.

Post-launch, scalability and dependability take priority: performance ceilings, caching strategies, robust authentication, and clean API boundaries. Through effective monitoring, continuous integration/deployment, and well-planned architecture, teams can iterate more quickly while preserving codebase stability as features and demand expand.