Building a web application begins by outlining user roles, essential use cases, and the data structure. A strong MVP targets essential flows, intuitive navigation, and consistent UI elements, enabling rapid delivery without becoming a brittle collection of isolated screens.

Post-launch, scalability and reliability take priority: performance budgets, caching, secure login, and clean API contracts. With effective monitoring, CI/CD, and well-planned architecture, teams can iterate more quickly while the codebase stays stable as features and traffic increase.