https://helpcenter.veeam.com/archive/vac/80/provider_admin/revoke_licenses.html
Revoking Veeam Backup Agent Licenses - Veeam Service Provider Console Guide
Each Veeam backup agent that is managed in Veeam Service Provider Console consumes a number of instances from the Veeam Service...
veeam backuplicenses serviceconsole guideagentprovider
https://www.rackspace.com/en-gb/resources/rackspace-managed-vmware-licenses-service-description
Rackspace Managed VMware Licenses Service Description | Rackspace Technology
vmware licensesservice descriptionrackspacemanagedtechnology