Building a web app begins by outlining user roles, primary use cases, and the data structure. A robust MVP concentrates on essential flows, intuitive navigation, and consistent UI elements, enabling rapid delivery without becoming a brittle collection of ad hoc screens.

Post-launch, scale and reliability take center stage: performance budgets, caching, strong authentication, and tidy API contracts. Through effective monitoring, CI/CD, and well-planned architecture, teams can iterate more quickly while preserving codebase stability as features and traffic increase.