How to Structure Large Flutter Applications for Scalable and Maintainable Growth
Flutter apps often outgrow their architecture before teams realize it. This guide covers how to structure large Flutter codebases for long-term maintainability by organizing around features rather than technical layers, separating presentation/domain/data concerns, scoping state ownership to individual features, isolating navigation logic, managing shared code carefully, and scaling dependency injection. Practical code examples using BLoC/Cubit illustrate each pattern, and production concerns like lazy initialization, observability, and feature flags are also addressed.