Read original post by Tony Champion at MSDN Magazine
Prior to the release of Windows Phone 8, companies had only a couple of options for deploying enterprise apps to their employees’ devices. They could release the apps to the Windows Phone Store and require user authentication, allowing the apps to be successfully deployed while securing their usage. Of course, the app would then be available in the store and available to the general public for download. The other approach was to use a mobile device management (MDM) solution to directly manage the devices. Microsoft currently offers two MDMs: Windows Intune and System Center 2012 Configuration Manager. While MDMs are still the preferred approach for many large-scale enterprises, they might not align with a company’s deployment goals.