In order to integrate Configuration Manager with the public cloud, you have to fulfil the prerequisites. The prerequisites can be classified into the following groups:
External dependencies: These dependencies are external to System Center Configuration Manager 2012 R2
Obtain certificates or keys depending on the platform: Depending on the mobile device platform, you need to import either certificates or side-loading keys in order to manage the platform
Internal dependencies: These dependencies are internal and refer to the Configuration Manager
Prerequisites for mobile device enrollment: These include other configurations, either internal or external to the Configuration Manager, that are needed for managing mobile devices
You can find more about them at http://technet.microsoft.com/en-us/library/jj884158.aspx#bkmk_preq.