Building a web app begins by outlining user roles, essential scenarios, and the data schema. A strong MVP concentrates on the main flows, intuitive navigation, and consistent UI elements, allowing the product to release rapidly without becoming a fragile collection of ad hoc screens.

Post-launch, scalability and reliability are paramount: performance budgets, caching strategies, secure authentication, and clean API contracts. With effective monitoring, CI/CD practices, and a well-considered architecture, teams can iterate more quickly while keeping the codebase stable as features and traffic expand.