we are planning to move in office 365 from our on premise exchange server 2003.
We have around 100 mailbox so we would like to do cut over migration. we have verified the prerequisites for the migration and we just want to confirm that how the mailbox batch will be move to the office 365 during the mailbox migration.
If we configure the endpoint with 5 mailbox for the migration then shall we select the specific 5 mailbox from all the 100 mailbox? So that we can manage the priority of mailbox migration with office 365.
We want to select manually 5 mailbox for the migration batch in the cut over migration. Is it possible? How? can you provide steps for the same?