How do you design a plugin-based feature toggle system in iOS architecture?

A plugin-based feature toggle system enables dynamic activation or deactivation of features via modular plugins.

Feature toggles are implemented using configuration-driven modules or runtime-loaded plugins. Each feature conforms to a protocol and is registered in a central registry. This allows remote configuration (via backend) to enable or disable features without app updates. It supports A/B testing, gradual rollouts, and safe deployments.