Building a web app begins by outlining user roles, essential scenarios, and the data structure. A robust MVP concentrates on core flows, intuitive navigation, and consistent UI elements, enabling rapid delivery without becoming a brittle collection of ad-hoc screens.

Post-launch, scalability and reliability take priority: performance budgets, caching strategies, secure authentication, and well-defined API contracts. Through effective monitoring, CI/CD, and well-considered architecture, teams can iterate more quickly while maintaining codebase stability as features and traffic expand.