VIPER: Taming Massive iOS View Controllers

VIPER is a strict architectural pattern that tames "Massive View Controllers" by splitting features into five layers: View, Interactor, Presenter, Entity, and Router. It's used in large iOS apps to make business logic and navigation explicitly testable.
VIPER is a strict architectural pattern for iOS that tames "Massive View Controllers" by splitting features into five distinct layers: View, Interactor, Presenter, Entity, and Router. It's ideal for large apps where testability and maintainability are critical. By isolating business logic (Interactor) and navigation (Router) from the UI, you can test core functionality without touching UI components. The primary footgun is its significant boilerplate, which can over-engineer smaller projects.
Read the original → objc.io
- #ios
- #architecture
- #swift
- #viper
- #clean architecture
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