Nathan Winters is an Exchange Technical Specialist at Microsoft UK. He has worked with many of the UK's largest companies across all sectors, helping them understand the value of their messaging platform and deploy Microsoft Exchange and Lync Server. Before joining Microsoft, he founded the Microsoft Messaging and Mobility User Group UK. He is a four-time MVP for Exchange Server and a regular speaker at major industry conferences in both the U.S. and UK. Neil Johnson is a Senior Consultant with Microsoft Consulting Services in the UK. He has over 16 years of experience in enterprise design and architecture, and is the author of the Exchange Client Network Bandwidth Calculator and the Jetstress Field Guide. Neil can often be found presenting at external events such as TechEd or Microsoft internal product events. Nicolas Blank has more than 15 years of experience with various versions of Exchange, and is the founder of and Messaging Architect at NBConsult. A recipient of the MVP award for Exchange since 2007, Nicolas is a Microsoft Certified Master in Exchange and presents regularly at conferences in the U.S., Europe, and Africa.