Building a web application starts by outlining user roles, primary use cases, and the data model. A solid MVP concentrates on essential flows, intuitive navigation, and consistent UI components, so the product can launch quickly without becoming a brittle collection of ad-hoc screens.

After launch, performance and reliability remain the top priorities: budgets for performance, caching strategies, secure sign-in, and clean API definitions. With proper monitoring, automated pipelines, and thoughtful architecture, teams can iterate more rapidly while keeping the codebase stable as features and usage grow.