Lync – Move On Prem users to Lync Online from CSV
Microsoft detail how to move users from Lync On-Prem to Lync Online and how to bulk move users in an OU or with a particular AD attribute: https://technet.microsoft.com/en-us/library/jj204969%28v=ocs.15%29.aspx?f=255&MSPPError=-2147217396. If you want to bulk move users to Lync Online from a CSV you can use the PowerShell below: $creds=Get-Credential Import-Csv movelyncusers.csv -Header Identity | Foreach-Object {Move-CsUser -Identity $_.identity -Target sipfed.online.lync.com -Credential $creds -HostedMigrationOverrideUrl https://admin1e.online.lync.com/HostedMigration/hostedmigrationService.svc} movelyncusers.csv should contain a list of the UPNs of the users you wish to move. No headings are required.