Web application development begins by outlining user roles, key scenarios, and the data model. A robust MVP emphasizes core flows, intuitive navigation, and predictable UI components, so the product can launch quickly without turning into a fragile collection of one-off screens.

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