Our friends over at the Inside Windows Phone team posted a blog last week that we'd encourage partners to spend 12 minutes with. it is a nice introduction into how Windows Phone (and Windows 8) apps can fit in Enterprise (and most all) customer scenarios. If your customers are asking questions or you just want to know more, this is a great use of your time.
Here are links to some resources that go more in depth on the topics discussed in the video.
The Windows Phone for "Business" page
From Tech Ed North America 2014
From the official developer documentation
Original Post: http://channel9.msdn.com/Shows/Inside+Windows+Phone/IWP66-Windows-Phone-for-Enterprise-Developers