Wow, what a journey from the days of Lync Server 2010, when Nathan Winters asked me to co-author our Mastering Lync Server 2010, through the next release and now to Mastering Skype for Business 2015 on my own. Nathan's role has changed to focus more on the cloud, so, sadly, he wasn't able to contribute as much to this one as with the previous books.

Thank you to the many readers of the Lync books who have gotten in touch either via email or direct meetings at conferences and user groups and to the other customers—without your feedback and ongoing support, I wouldn't have gotten to book 3! Keep the feedback coming (even the bad constructive stuff!).

Throughout the process, I have been supported, guided, and mostly cajoled by ...

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