Shared service application in sharepoint 2013

Links

http://blogs.technet.com/b/meamcs/archive/2013/09/03/cross-farm-service-applications-integration-between-two-separate-sharepoint-farms.aspx

http://mrhodes.net/2010/05/24/publishing-service-applications-between-sharepoint-2010-farms-part-2-7/

http://mrhodes.net/2010/05/19/publishing-service-applications-between-sharepoint-2010-farms-part-1-8/