Skype for Business. Skype for Business is a unified messaging utility which brings together instant message chat and video communications. In Skype for Business, you can send messages and use voice and video to communicate with others, as well as utilize screen sharing for video conferencing and remote presentations.tep by step instructions on how to install Microsoft Lync (Skype for Business) on my PC. Step by step instructions on how to install Microsoft Lync (Skype for Business) on my Mac. __________________________________________________________________________________________________.