Metro CSG will get you through it professionally & painlessly
Our experience with Metro CSG was excellent, I highly recommend them. After speaking with a few different Microsoft Gold Partners I decided to go with Metro CSG because Kamal Kabshura was honest, knowledgeable, and professional. He arranged a couple preliminary meetings with their technical staff to go over the best practice and options for our migration to Office 365 email. We migrated from a multi domain on-premise exchange system that had been expanded and upgraded for fifteen years. The technical contact I worked with throughout the project was Ray Guo, and he had everything under control. He made sure everything was prepared for a successful cut-over, and was available for any follow-up support in the weeks following. Ray was also kind enough to give me a tutorial on managing our new online Exchange Portal.