Building a web app begins by outlining user roles, key use cases, and the data schema. A strong MVP emphasizes essential flows, intuitive navigation, and consistent UI elements, enabling rapid delivery without becoming a brittle collection of ad-hoc pages.

Once launched, scalability and reliability take center stage: budget for performance, implement caching, ensure secure authentication, and maintain clean API contracts. With solid monitoring, CI/CD, and thoughtful architecture, teams can iterate faster while preserving code stability as features and traffic expand.