Skype for Business

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Skype for Business

Basic data

developer Microsoft
Current  version 2016 (Windows)
2015 (macOS)
operating system Windows , macOS , Windows Phone , Android , iOS
category Instant messaging
License proprietary (Microsoft EULA )

Skype for Business (from 2010 to 2015 Lync , also Microsoft Lync ) is a proprietary application from Microsoft that combines various communication media ( real-time collaboration , IP telephony , video conferencing ) in a uniform application environment (see also Unified Communications ). The target groups for Skype for Business are medium-sized and large companies and, with the introduction of Skype for Business Online, also smaller companies and organizations.

In September 2017 Microsoft announced that Skype for Business would be replaced by the Microsoft Teams communication platform in the future .

Skype for Business Online

Skype for Business Online can be purchased as a stand-alone online service via Office 365 or as part of an Office 365 Enterprise Suite. All services for Skype for Business Online are provided by Microsoft . Microsoft offers various deployment options for Skype for Business Online.


Basic functions of Skype for Business Online are:

Lync 2013 (Server)

Lync Server (formerly Microsoft Office Communications Server) is an application that provides an application environment for instant messaging, presence, conference and telephone services (including through PSTN connection) and SIP trunking .


  • 2002 - Real Time Conferencing Server (MS-RTC, development name of the LCS)
  • 2003 - Live Communications Server 2003
  • 2005 - Live Communications Server 2005, codenamed Vienna
  • 2006 - Live Communications Server 2005 with SP1
  • 2007 - Office Communications Server 2007
  • 2009 - Office Communications Server 2007 R2
  • 2010 - Lync Server 2010
  • 2012 - Lync Server 2013 (RTM October 11, 2012)
  • 2015 - Skype for Business Server 2015
  • 2018 - Skype for Business Server 2019

Functions (selection)

Microsoft TechNet offers a complete overview of functions .

Lync client applications

Desktop client applications for Skype for Business: ( Windows and macOS )

  • Lync Online
  • Lync for Mac
  • Communicator for Mac
  • Online Meeting Add-in for Lync
  • Lync Phone Edition (will no longer be developed)
  • Lync 2010 Attendant (will no longer be developed)
  • Lync Attendee
  • Lync Web App
  • Lync 2013
  • Skype for Business (part of Office 2016)

Skype for Business clients for mobile operating systems are available for:

Interfaces and protocols

Skype for Business collects presence information about the company's employees, i.e. it creates attendance lists and logs communication between employees and during video conferences.

Server technology enables computers to be maintained from a remote computer. The Session Initiation Protocol (SIP) is used for Internet telephony and the SIMPLE standard is used as a supplement for instant messaging and presence information . The system transfers files using the RTP and SRTP protocols, and online conferences using the Persistent Shared Object Model (PSOM). The Lync client uses HTTPS to connect to the Web Components Server to download address books and expand distribution lists. The combinations supported as standard include encrypted communication with SIP via TLS and SRTP and unencrypted SIP via TCP and RTP. The Lync Server technology also offers connection to chat services from other manufacturers such as AOL Instant Messenger , Yahoo Messenger and Google Talk .

The current server variant is Skype for Business Server 2015. Skype for Business is included as a client in Office 2016 and Office 365 .

Client platforms

Skype for Business is offered for Windows and macOS . There are also apps for Android , iOS , and Windows Phone . The open SIP protocol makes it possible to connect to Microsoft Lync Server with other clients, such as the Microsoft Communicator on Nokia smartphones (Symbian 3 since Anna update). An app for Windows 8 and Windows 10 is also available in the Windows Store .

See also

Individual evidence

  1. Lync 2013 Functions & Features on
  2. Microsoft Teams replaces Skype for Business. In: heise online. Accessed July 15, 2018 (German).
  3. TechNet: Lync 2013 on
  4. Lync Deployment & Scheduling on
  5. New functions for Lync 2013 on
  6. TechNet Lync 2013 (functions & features) on
  7. Client Comparison Tables on
  8. Mobile Client Comparison Tables on
  9. Office 2016 sets standards for teamwork. September 22, 2015, accessed September 24, 2018 .
  10. Office 365: Install Skype for Business. Retrieved September 24, 2018 .
  11. Microsoft Lync 2010 for Android on (English); Retrieved June 23, 2012
  12. Office Mobile on; Retrieved June 23, 2012
  13. Microsoft Windows Phone Lync 2010 on; Retrieved June 23, 2012