Lync will also require companies to take a closer look at how their networks are designed and how their IT organizations are structured.
Traditionally, the part of the IT organization that implements Lync for instant messaging, SharePoint and Exchange is different from the part of IT that implements voice and video tools.
"Companies have to figure out how to get these people to work together," says Blood, "which is especially difficult at giant companies with a lot of internal politics."
Will Users Adjust to Being Interrupted More?
Blood notes that Lync makes communication easier and more flexible, yet could also lead to a workforce that is even more distracted.
"For Lync to be truly used enterprisewide, workers will have to get over the hurdle of being interrupted more," he says. "You end up doing things you weren't planning to do and you're not as productive. This has become the normal of working for many people, but it's mostly younger workers."
If you push out Lync to the whole company at once, Blood warns, you may find that not enough people will use it.
The first rollouts should be for focused groups of workers as a test to see if Lync can drive business.
"You need to see ROI first before rolling it out to everyone," Blood says.
Shane O'Neill covers Microsoft, Windows, Operating Systems, Productivity Apps and Online Services for CIO.com. Follow Shane on Twitter @smoneill. Follow everything from CIO.com on Twitter @CIOonline. Email Shane at email@example.com.