Creating a web app begins by outlining user roles, primary use cases, and the data structure. A strong MVP emphasizes essential workflows, intuitive navigation, and reliable UI building blocks, enabling rapid delivery without evolving into a brittle collection of ad-hoc screens.

Post-launch, the main priorities are scalability and reliability: performance budgets, caching strategies, secure login, and well-defined API agreements. By implementing good monitoring, CI/CD pipelines, and well-planned architecture, teams can iterate more quickly while maintaining codebase stability as features and user load expand.