Tag Limits Not all resource types support tags. This means that you will not be able to apply tags to everything in Azure. A resource or resource group is limited to 15 tags. Each resource can have different tags. Tag names cannot exceed 512 characters. For storage accounts, tag names are limited to 128 characters. Tag values cannot exceed 256 characters. VMs cannot exceed 2048 characters for all tag names and values combined. Tags are not inherited by child resources….