The discount landscape, briefly
Every major cloud provider has at least four or five ways to discount your bill. The names change between vendors, but the categories are stable:
- Reserved Instances — commit to a specific instance type for one or three years, get a steep discount.
- Savings Plans — commit to a dollar-per-hour spend on compute, get a smaller discount with much more flexibility.
- Service-specific discounts — committed-use discounts on databases, storage, networking, etc.
- Enterprise agreements — negotiated discounts on overall spend, often tied to multi-year volume commitments.
The instrument matters less than how well it fits the workload underneath it. A Reserved Instance saves you 60% if you actually use it — and costs you 100% if you don't.
Choose by workload shape, not by discount size
The most common discount mistake is buying the cheapest instrument without checking whether the workload will still be running when the commitment ends. A three-year Reserved Instance saves more than a one-year, but only if the underlying workload survives three years in its current shape.
Match the commitment term to your confidence interval. Predictable, mature workloads can take three-year commitments. Workloads under active development should stay on one-year Savings Plans or on-demand pricing until the shape stabilizes.
Manage commitments as a portfolio
A commitment portfolio behaves like any other financial portfolio. You diversify by instrument, you rebalance on a cadence, and you measure utilization. The reseller or in-house FinOps team that thinks of it this way will systematically out-perform the team that treats each commitment as a one-off purchase.
Three metrics tell you whether the portfolio is working:
- Coverage — what percent of eligible spend is covered by some commitment.
- Utilization — for each commitment, are you actually using the capacity you bought.
- Effective discount — total commitment savings divided by total compute spend.
Where this falls apart without tooling
You can manage a small commitment portfolio in a spreadsheet for a while. The breakpoint is usually around $1–2M in annual compute spend, or when you cross more than one cloud provider. Past that, the manual coordination cost overtakes the savings — and you start missing renewals, double-buying instruments, or carrying idle capacity for months at a time.
That's where a cloud financial management platform earns its keep. moneta's discount management exists to do exactly this work: continuously evaluate workload patterns, recommend the right instruments, and surface utilization issues before they become losses.
Where to start
If you're early on the journey, start with the simplest thing that will give you visibility: a coverage and utilization report run once a month. Don't optimize anything yet. Just look.
You'll learn more about your workload patterns in the first month of consistent reporting than you will in a year of one-off discount purchases. Once the patterns are clear, the right instruments become obvious.