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

Post-launch, scalability and dependability are paramount: performance budgets, caching strategies, secure authentication, and tidy API contracts. With effective monitoring, CI/CD, and well-planned architecture, teams can iterate quickly while maintaining a stable codebase as features and user load expand.