Skype

https://blogs.office.com/2015/11/30/office-365-brings-significant-new-value-to-business-customers-worldwide

https://blogs.office.com/2015/11/30/a-deeper-view-into-skype-for-business-cloud-pbx

http://skype4b.uk/2015/07/17/skype-for-business-is-cloudpbx-enterprise-voice/

https://blogs.office.com/2015/04/14/skype-for-business-is-here/

http://blogs.office.com/2015/04/01/whats-new-in-skype-for-business-and-how-you-can-take-control-of-updates

http://www.neowin.net/news/microsoft-to-introduce-skype-for-business-on-march-18-replacing-lync

http://blogs.skype.com/2014/12/15/skype-translator-preview-an-exciting-journey-to-a-new-chapter-in-communication/

http://blogs.office.com/2014/12/05/video-calling-skype-lync-available-now/

http://blogs.office.com/2014/11/11/introducing-skype-business