Starting with defining user roles, key scenarios, and the data model sets the foundation for web app development. A solid MVP concentrates on essential flows, intuitive navigation, and consistent UI components, enabling rapid delivery without becoming a fragile collection of bespoke screens.

Post-launch, scalability and reliability take precedence: performance budgets, caching, secure authentication, and clean API contracts. With proper monitoring, CI/CD, and thoughtful architecture, teams can iterate more quickly while keeping the codebase stable as features and traffic expand.