You can create a catalog to make a set of vApp templates or media files available to organizations in a single vCloud Director installation or to organizations across multiple vCloud Director installations.
Organizations use catalogs to store vApp templates and media files. The members of an organization can use catalog items as the building blocks to create their own vApps.
When you share a catalog, the items in the catalog become available to all or selected organizations in the vCloud Director installation. The administrators of each organization can then choose which catalog items to provide to their users.
When you publish a catalog for external organizations to use, the items in the catalog become available to organizations across multiple vCloud Director installations. For an organization outside the vCloud Director installation to access an externally published catalog, the organization must subscribe to the catalog.
Before you can create a published catalog, you must create and provision an organization to contain the catalog.