Building a web app begins by outlining user roles, primary scenarios, and the data schema. A strong MVP concentrates on essential flows, intuitive navigation, and reliable UI elements, enabling the product to launch rapidly without becoming a brittle collection of ad-hoc screens.

Post-launch, scalability and dependability take priority: performance budgets, caching, robust authentication, and clean API agreements. With effective observability, CI/CD practices, and well-considered architecture, teams can iterate quickly while maintaining codebase stability as features and traffic expand.