Building a web app begins by outlining user roles, essential use cases, and the data schema. A robust MVP concentrates on main workflows, intuitive navigation, and consistent UI elements, allowing the product to launch swiftly without becoming a brittle collection of ad-hoc screens.

Post-launch, scalability and reliability take precedence: performance budgets, caching strategies, strong authentication, and clear API contracts. With effective monitoring, CI/CD, and well-considered architecture, teams can iterate more quickly while maintaining codebase stability as features and traffic expand.