AWS offers three Reserved Instance payment options for RIs/SPs: no upfront, partial upfront, and all upfront. ProsperOps supports all three options, and you set your pre-payment preference as part of configuring the service.
If you configure your pre-payment preference for either partial or all upfront, a quarterly pre-payment budget is established (which you control) and serves as an additional constraint for our service. This budget represents the dollars available each quarter for ProsperOps to deploy to increase your savings. We deploy it opportunistically meaning we only use it if there are incremental opportunities to improve savings.