- Exchange Hybrid Deployment and Migration with Office 365
- MS Exchange Online Services
- For Online Administrator
- Do I need to purchase a license for the Exchange 2010 hybrid server on prem?
No, if you have a production tenant for Exchange Online you can request a hybrid server product key via Online Support to license the hybrid server. Read more here. (Exchange Online Licensing: http://www.microsoft.com/exchange/en-us/licensing-exchange-online-email.aspx)