With an express hybrid deployment, you configure a subset of hybrid features that enable mailbox migration from %BRAND_EXCHANGE_ONLINE_SHORT% ...

With an express hybrid deployment, you configure a subset of hybrid features that enable mailbox migration from %BRAND_EXCHANGE_ONLINE_SHORT% Server 2010 or later to %BRAND_OFFICE_365_SHORT% with less administrative effort than a full hybrid deployment. The express hybrid deployment method is intended for admins who want to quickly migrate all their users to %BRAND_OFFICE_365_SHORT% while providing a richer migration experience than a cutover migration.