Create content types available in multiple site collections

I want to create a content type, 开发者_StackOverflow社区lets call it MyDocument with some properties we need. However we have 10 departments each one with its own site collection.

I want all documents to be created using MyDocument,across all site collections.

Thanks

In SharePoint 2010, you can use a Content Type Hub.

From Plan to share terminology and content types:

To share content types among site collections, you make one content type gallery the “hub” of a managed metadata service, create connections to the service from each Web application that contains a site collection, and specify that site collections should use the content types in the service.

The same effect can also be achieved using a custom Feature.