Building a web app begins by outlining user roles, key scenarios, and the data model. A robust MVP concentrates on essential flows, intuitive navigation, and consistent UI components, allowing the product to launch quickly without turning into a fragile collection of ad hoc screens.

After launch, growth and reliability become priority: performance budgets, caching strategies, secure login, and clean API contracts. With solid monitoring, CI/CD, and thoughtful architecture, teams can move faster while keeping the codebase stable as features and traffic expand.