What you wish you knew prior to moving to PS in the cloud

We are in the process of moving our PS system into the cloud and are right now reviewing the SOW and SLA for the contract. If you have implemented or migrated to cloud hosting, is there anything you wish you knew, or anything you wish had been reviewed or examined prior to the move? This is new ground for us, so I really don't know what I don't know.

Thanks,

Thomas D'Andrea