Information labelling in vCloud
There are three labelling capabilities provided by Cloud Director product.
Metadata tags
Tenant can utilize metadata tags to categorize its own virtual resources. Metadata can be assigned to most objects, including vAPP, VM, Catalog, vDC.
Security tags
Tenants can utilize security tags which can be associated with a virtual machine or a group of virtual machines. Security tags are designed to be used with security groups. Once they're created they can be associated with a security group which can be used in firewall rules. A common use case for security tags is to dynamically group objects to simplify network firewall rules.
VM badges
Administrator can put predefined badges on VMs in his own tenant which will help to categorize workloads on the basis of its nature. Also it allows to filter VMs by assigned badges.
More information can be found in official product documentation portal - https://docs.vmware.com/en/VMware-Cloud-Director/10.4/VMware-Cloud-Director-Tenant-Portal-Guide/GUID-74C9E10D-9197-43B0-B469-126FFBCB5121.html