The distinction between 'personal' and 'business' devices is rapidly blurring. And why not? It's incredibly convenient. You just need one phone or tablet or laptop for everything, and you can just use all of your familiar messaging and collaboration by using your personal consumer apps at work.
While the convenience is undeniable, that attitude also sends a chill down the spine of IT departments everywhere. Using those familiar personal apps at work make your personal life so convenient can also make it incredibly difficult to create a fully collaborative, secured work environment.
For people to collaborate everything must be searchable and accessible across your entire network using secure business apps.