Following are the key components of Evidence Broker:

Change Notification Interface
This evidence broker web services interface is used to share and accept evidence changes from and to remote systems. An API version of this interface exists for more performant sharing if the source and target are the same system.
Evidence Broker Sharing Configuration
Evidence broker sharing configuration allows systems to configure systems, programs, and evidence types as the source and target for evidence sharing.
Evidence Broker Sharing Strategy
A case type specific sharing strategy to allow organizations additional flexibility in providing consent to sharing of evidence changes. A default sharing strategy exists that uses evidence broker configuration data to determine the sharing targets.
Evidence Broker Broadcast Hook
An evidence type specific hook that is invoked while applying evidence changes to the target case.