Scope of impact caused by a failure.

Rules defining how data updates become visible.

Business area represented by a software system.

Component translating between interfaces or systems.

Component whose failure can cause system failure.

Reads reflect the latest completed write according to the model.

Software representation of business concepts and rules.

Abstract interface defining an application's interaction point.

Duplication of resources for resilience.

Replicas eventually converge to a common state.