In May 2013, Microsoft announced that it would allow Lync users to communicate with Skype, a consumer IM platform it had acquired in 2011. In November 2010, the platform was renamed Lync. Microsoft released the successor to Office Communicator, Lync 2010, on January 25, 2011. It was followed by Office Communicator 2007 R2, released on March 19, 2009. Microsoft released Office Communicator 2007 to production on July 28, 2007, and launched it on October 27, 2007. Support for Skype for Businesses Online ended in July 2021, although a new version of Skype for Business Server will be available with a subscription license. In September 2017, Microsoft announced that it would phase out Skype for Business Online in favor of Microsoft Teams, a new cloud-based collaboration platform. In 2015, the software was rebranded from Lync to Skype for Business, co-branding it with the Microsoft-owned consumer messaging platform Skype (which had begun to integrate with Lync in 2013). It supports text, audio, and video chat, and integrates with Microsoft Office components such as Exchange and SharePoint. It is designed for use with the on-premises Skype for Business Server software, and a software as a service version offered as part of Office 365.

Skype for Business (formerly Microsoft Lync and Office Communicator) is an enterprise software application for instant messaging and videotelephony developed by Microsoft as part of the Microsoft Office suite.

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