In SharePoint 2013, some service applications can be shared across server farms. By publishing a service application, you can optimize resources, avoid redundancy, and provide enterprise-wide services without installing a dedicated enterprise services farm. You can publish the following service applications in a SharePoint 2013 farm: Business Data Connectivity Machine Translation Managed Metadata User Profile Search Secure Store Additionally, a SharePoint 2010 farm can consume services from a SharePoint 2013 Server farm. This allows for upgrade of multi-farm environments in which a farm hosting service applications is upgraded first. In this scenario, the service applications and features that the SharePoint 2010 farm experiences are limited to those that are available in SharePoint 2010. For example, a SharePoint 2010 farm cannot consume the Machine Translation service application from a SharePoint Server 2013 farm and does not benefit from the new features of the User Prof...