Creating a web application begins by outlining user roles, key use cases, and the data model. A solid MVP concentrates on essential flows, intuitive navigation, and predictable UI elements, enabling the product to launch quickly without becoming a fragile collection of bespoke screens.

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