Office365 FAQs - During transition, will users on the legacy system be able to communicate with those on the new system?

PRINT  |  E-MAIL

​Yes.

  • Email: on-premises Exchange will be upgraded to 2016 in order to ensure compatibility with O365. Once the migration is complete, most of the Exchange 2016 on-premises footprint will be decommissioned (the cutters will remain).
  • Skype: on-premises Skype will be compatible with Teams in O365.