Building a web application begins by outlining user roles, essential use cases, and the data schema. A solid MVP concentrates on core flows, intuitive navigation, and predictable UI components, so the product can ship quickly without becoming a fragile collection of ad-hoc screens.

After launch, scalability and reliability are paramount: performance budgets, caching, secure authentication, and clean API contracts. With proper monitoring, CI/CD, and thoughtful architecture, teams can iterate faster while keeping the codebase stable as features and traffic grow.