Making sure you're prepared is often the lion's part of success, and the cloud is no exception. The priority is security.
If you’re considering moving to the cloud, you’re right to be concerned about the vast changes that will be required as you make your transition. Lift and shift isn't easy. This is an architecture. This is messy.
There's potentially a gulf of pain between using cloud services and successfully using cloud services. How will you know if you're being successful? You need the metrics that match your priorities: agility, TCO, reach and productivity.