Building a web application begins by outlining user roles, key use cases, and the data model. A strong MVP concentrates on essential flows, intuitive navigation, and consistent UI elements, enabling the product to launch quickly without turning into a fragile collection of ad-hoc screens.

Post-launch, scalability and reliability take priority: performance budgets, caching, secure sign‑in, and clean API contracts. With solid monitoring, CI/CD, and thoughtful architecture, teams can iterate more rapidly while keeping the codebase stable as features and traffic increase.