How do you design AngularJS applications to avoid shared state corruption in large teams?

Shared state corruption is prevented using strict ownership rules, immutable patterns, and service encapsulation.

In large teams, multiple modules may accidentally mutate shared singleton services leading to inconsistent UI states. Preventing this requires defining state ownership boundaries. Only one service should mutate a specific state slice, while others can only consume it. Immutable state patterns reduce accidental mutation. Event-driven updates ensure controlled propagation of changes.