Building a web application begins by outlining user roles, primary use cases, and the data structure. A robust MVP concentrates on essential paths, intuitive 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 center stage: performance budgets, caching, secure authentication, and clean API interfaces. With solid monitoring, CI/CD pipelines, and well-planned architecture, teams can iterate more quickly while maintaining codebase stability as features and traffic expand.