Building a web app starts with outlining user roles, essential use cases, and the data model. A solid MVP concentrates on the main flows, intuitive navigation, and consistent UI elements, so the product can ship quickly without turning into a brittle collection of ad-hoc screens.

Post-launch, scalability and reliability take precedence: performance budgets, caching, robust authentication, and clean API agreements. With effective monitoring, CI/CD, and well-considered architecture, teams can iterate faster while preserving the codebase as features and traffic grow.