The App overview it says: Enable your customers to enter payment on a customer-facing Clover Mini, while you control the orders and charges on your own point of sale system. Use the cloud to connect your Clover Mini and Cloud Pay Display sends and receives the transaction information securely. If supported by your point of sale system, customers will also be able to see items as they are added to their order.
It sounds like the same description as the USB Pay Display app but for the cloud, but there is no more information on the semi-integration SDK's
Thanks for your help.