The good news is that Skype For Business is coming to Mac in 2016 but the bad news is that it seems Microsoft won’t be releasing it until 2016. With the release of Office 2016 For Mac, there was some hope that Microsoft would finally update Mac users from clunky old Lync 2011 for Mac to either Skype for Business for Mac or at the very least, Lync 2016 For Mac. Adium is a free Lync for Mac alternative that doesn’t leave you tearing your hair out like Lync for Mac.
If you want to ditch Microsoft Lync on Mac, use Adium.