DMC addressed some unique technical challenges: The project had timeline restrictions as it needed to be nished in 2 weeks. Domains needed to be merged. Identities needed to be merged into an existing O ce 365 tenant. Large number of shared mailboxes and resource rooms. To address these challenges, DMC worked nights and weekends to complete the project ahead of schedule. DMC received authorization to begin work on a Thursday and began work immediately that day. All mail over 90 days old was moved to O ce 365 the rst weekend and the remaining emails was moved during the week of cutover. An expedited planning phase allowed DMC to meet this aggressive timeline. In order to merge the domains, DMC had to set up a two-way AD trust between the 2 networks so that they could talk to each other

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