Building a web app begins with identifying user roles, essential scenarios, and the data model. A solid MVP emphasizes the main workflows, intuitive navigation, and consistent UI elements, enabling rapid delivery without collapsing into a fragile collection of ad-hoc screens.

Following launch, scalability and dependability take center stage: performance budgets, caching strategies, strong authentication, and clean API definitions. With effective monitoring, continuous integration/delivery, and a thoughtful architecture, teams can iterate more quickly while preserving code quality as features and traffic expand.