Microsoft Lync is a robust and easy to use collaboration platform. It provides employees in organisations with tools to collaborate from anywhere, at any time, on any device. The tools include Instant Messaging, video conferencing, and access to shared workspaces for meetings and presentations. Lync integrates with standard Microsoft technologies and products already in use in many organisations. Namely: Active Directory, Windows Server, Microsoft Exchange & Microsoft SQL server.
Lync is now Skype for Business