Scalability in mobile apps is not just about handling more users. It encompasses code structure, state management, network layer design, and how well the app adapts to new features and platforms.
We outline proven architecture patterns: clean separation of UI, business logic, and data; modular feature-based structure; and consistent patterns for async work and caching.
Choosing the right architecture early reduces technical debt and makes it easier to onboard new developers and ship updates without regressions.