Building a web application begins by specifying user roles, key scenarios, and the data model. A solid MVP concentrates on the essential flows, straightforward navigation, and consistent UI components, so the product can be delivered quickly without becoming a fragile collection of ad-hoc screens.

After it launches, scalability and reliability take center stage: performance budgets, caching, secure authentication, and clean API agreements. With proper monitoring, CI/CD practices, and thoughtful architecture, teams can iterate more rapidly while keeping the codebase stable as features and traffic expand.