Data transferred out of a cloud storage service to another system, service, or user.
Egress occurs when an application downloads an object, a customer retrieves stored data, or a cloud provider sends content to a CDN. Some providers charge according to the volume of data leaving their platform.
Egress costs can significantly affect the total cost of cloud storage, particularly for frequently accessed data. Caching and favorable cloud-to-CDN transfer arrangements can reduce the amount of billable egress.