I have performed run and maintain operations for government clients for Exchange 2003/2007/2010/2013/2016 environments, including patching, maintenance, troubleshooting, environment improvements, and server consolidation. I have also participated and implemented Exchange 2003/2007/2010/2013 to Exchange 2016 migrations for large enterprise networks, to include a government client of over 700k mailboxes. I have designed/build/configured Blackberry Enterprise Server deployments, as well as migrations/upgrades. I have also performed design and installation of complex implementations of anti-spam/virus mail gateway devices in large enterprise networks. I also have experience in working with Microsoft to implement on-site Exchange deployments to the Microsoft Office 365 cloud for a network of approximately 85,000 mailboxes. My vast experience with large enterprise deployments of all versions of Microsoft Exchange in complex environments allows me to come up with solutions for any type of Exchange/Black