Tag defaults let you specify a default tag (tagnamespace.tag="value") to apply to all resource types in a specified compartment. The tag default is applied at the time the resource is created. Resources that exist in the compartment before you create the tag default are not tagged. The TagDefault object specifies the tag and compartment details.
Tag defaults are inherited by child compartments. This means that if you set a tag default on the root compartment for a tenancy, all resources that are created in the tenancy are tagged. For more information about using tag defaults, see Managing Tag Defaults.
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