# Interfaces
Mapper translates between the git repo representation (yaml) and the business entities.
Owners provides the business logic for owner metadata.
PRValidator validates pull requests in the underlying repository to prevent bringing invalid content to the mainline.
Repositories provides the business logic for repository metadata.
Services provides the business logic for service metadata.
Trigger triggers update runs in Updater.
Updater is the central orchestrator component that manages information flow.