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

Post-launch, scalability and dependability take center stage: performance budgets, caching, robust authentication, and clear API contracts. Through effective monitoring, continuous integration/delivery, and well-planned architecture, teams can iterate rapidly while maintaining codebase stability as new features and traffic expand.