SharePoint 2013 Cumulative Update (CU) or a Service Pack (SP). Be aware that you need to install them before migrating any site and before delivering your SharePoint Infrastructure Environment.
The most important part is the “testing” part from Business. A 100% PowerShell complete is not 100% Business testing complete. After their go the site/infrastructure is “up and “running”.
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
• Secure Store
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