Web app development begins by outlining user roles, key use cases, and the data model. A solid MVP concentrates on essential flows, intuitive navigation, and consistent UI elements, enabling rapid release without becoming a fragile collection of bespoke screens.

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