Home > Storage > ObjectScale and ECS > Product Documentation > Dell ObjectScale: Overview and Architecture > Event notification
In ObjectScale, every operation that changes the status of an object generates an event notification. Operations that change an object, such as create, read, update, and delete (CRUD), have a corresponding journal entry. Journal entries are written to streams and consumed by the geo and metrics services. Users may consume event streams using web hook destinations. The destination configuration manager (DCM) is the API for configuring webhook destination endpoints for delivery of event streams.