Published metadata is considered available for use outside of the community that created the original document. This broader audience may be internal to a project or organization or external. Metadata that is published must be wrapped in a DDI instance, versioned, and available for reuse or reference from outside of the instance. Packaging as a DDI instance does not necessarily mean packaging for publication. Metadata may be packaged for reasons other than publication during its internal development process. In these cases versioning is not required.