The Content Type Hub is a site collection where you can publish reusable collection of metadata (columns), workflow, behaviour, and other settings that are available to other site collections in the farm/tenant.

If you are using SharePoint online, the Content Type Hub is already been provisioned and configured. It can be accessed by going to:

You can publish, republish, or unpublish content types centrally. To do that,

  1. Go to the top-level site in the content type hub site collection.
  2. Click Settings Office 365 Settings button and then click Site Settings.
  3. Under Web Designer Galleries, click Site content types.
  4. On the Site Content Types page, click the name of the content type for which you want to manage updates.
  5. Under Settings, click Manage publishing for this content type.

You can also view the publishing history for the content type on the Content Type Publishing page.

Get updates for published content types from a subscriber site

If you’re working on a site that subscribes to content types from a content type hub, you’ll automatically receive updates when they are published from the content type hub. You can refresh the content types at any time to receive any recent updates.

  1. Click Settings Office 365 Settings button and then click Site Settings.
  2. Under Site Collection Administration, click Content type publishing.
  3. In the Refresh All Published Content Types section, click Refresh all published content types on next update.