Building a web app begins by outlining user roles, key use cases, and the data model. A strong MVP concentrates on 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, robust authentication, and clean API specifications. With proper monitoring, CI/CD, and thoughtful architecture, teams can iterate more quickly while keeping the codebase steady as features and traffic expand.