To that end, it’s allowing admins the ability to switch between Skype for Business and the traditional Lync user interface, Microsoft explains in a blog post this morning detailing the changes. Microsoft had only a few weeks ago unveiled the technical preview version of this software, so it acknowledges that some customers may still require additional testing time. It’s also now rolling out Skype for Business Online to its Office 365 customers who currently use Lync Online. Microsoft’s “Skype for Business,” which is designed to replace the company’s older enterprise communication tool Lync, is rolling out publicly today as part of the Office 2013 April update, the company announced this morning.