Building a web application begins by outlining user roles, primary use cases, and the data schema. A strong MVP concentrates on essential flows, straightforward navigation, and consistent UI elements, allowing the product to launch rapidly without becoming a brittle collection of ad-hoc screens.

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