A newly created organization has no catalogs in it. After a Virtual Infrastructure administrator or catalog author creates a catalog, members of the organization can use it as a destination for uploads or a source of subscription-based content.

Catalogs contain references to vApp templates and media images. A Virtual Infrastructure Administrator or catalog owner controls catalog sharing. Virtual Infrastructure Administrators in organizations that have permission to publish catalogs control publication and subscription options for catalogs in their organization.

A catalog initially grants full control to its owner and no access to other users. The catalog owner or a Virtual Infrastructure Administrator can grant catalog access to other members of the organization, individually or collectively. See Controlling Access to vApps and Catalogs.

The VMware Content Subscription Protocol (VCSP) is an open standard that can be implemented by any system that can provide HTTP or HTTPS access. Because vCloud Director implements this protocol, catalogs can subscribe to content that originates in another instance of vCloud Director or at any remote site that supports a VCSP endpoint. When content at a remote site changes, you must synchronize the catalog items that hold local copies of that content. Synchronization keeps a catalog up to date with its external subscription.

As part of VCSP support, catalogs and catalog items have version numbers, which are integer values that increment monotonically. The catalog item version number increases whenever any of the following changes occur.

A file in the referenced entity is added, removed, or changed.

The name or description of the catalog item is changed.

The catalog version number increases whenever any of the following changes occur.

A catalog item is added to or removed from the catalog.

The version number of any contained catalog item changes.

The name or description of the catalog is changed.