How does ProsperOps deal with EC2 capacity reservations?

ProsperOps uses regional RIs which don't include capacity reservations. We favor regional RIs over zonal RIs because they support instance size flexibility (ISF), which improves savings for Linux/Unix shared tenancy customers.

AWS has released a capacity reservation feature called On-Demand Capacity Reservations. This enables capacity reservations to be managed independently from discount reservations (i.e., RIs and SPs).