Understanding the usage and coverage of a Savings Plan is crucial for assessing its effectiveness in reducing resource usage costs. This topic explains how to monitor the usage and coverage of a Savings Plan, and optimize your plan based on current performance.
View Savings Plan usage
Definition
Savings Plan usage measures the percentage of the plan's value that offsets your costs relative to its total value. Higher usage signifies more efficient use of the Savings Plan.
Savings Plan usage = Amount offset by the Savings Plan / Total Savings Plan amount
Amount offset by the Savings Plan: the amount that the Savings Plan offsets for pay-as-you-go resources.
Total Savings Plan amount: the total cost of the Savings Plan within the selected time frame, calculated as: Total Savings Plan amount = Hourly commitment × Subscription duration.
Procedure
Usage overview
Log on to Expenses and Costs.
In the left navigation pane, select Billing Account > Savings Plan.
On the Savings Plan page, click the Usage tab.
Enter the Budget Name for the budget query, select the Time Granularity and Time Range based on the time dimension, select Add Filter Conditions, and click Search.
Use case 1
Adrian purchased an on-demand ECS instance in a specific region, then bought a 3-year all upfront general-purpose Savings Plan upon recommendation. Between 2022-12-01 00:00:00 / 2023-02-06 00:00:00, Adrian's total Savings Plan amount was USD 160.80, and the offset amount was USD 127.41.
During this period, Adrian's Savings Plan utilization = Amount offset / Total Savings Plan amount = 127.41/160.80 = 79.24%. This shows that Adrian effectively used the Savings Plan to reduce costs, but there is still room for improvement to achieve 100% usage for maximum savings.
View Savings Plan coverage
Coverage overview
Savings Plan coverage assesses resource usage, with higher coverage indicating more effective cost reduction.
Savings Plan coverage = Amount offset by the Savings Plan / Total eligible resource spend
Amount offset by the Savings Plan: The amount that the Savings Plan offsets for pay-as-you-go resources.
Total eligible resource spend: The combined total of Savings Plan amounts and pay-as-you-go charges for resource usage beyond the plan's commitments.
Expenses And Costs coverage includes all products eligible for Savings Plans. To view coverage for a specific product, filter by the product details.
Procedure
Coverage Overview
Log on to Expenses and Costs.
In the left navigation pane, select .
On the Savings Plan page, click the Coverage tab.
Under Conditions on the right, enter the Budget Name under Query by Budget, select the Time Granularity and Time Range, add Filters, and click Search.
Use case 2
Patrice purchased an ecs.hfr7.xlarge on-demand instance in a specific region, then bought a 3-year all upfront general-purpose Savings Plan upon recommendation. During the period from 2022-01-05 00:00:00 to 2023-01-12 00:00:00, Patrice's offset amount was USD 1.23, and the total spend was USD 1.23. Thus, Patrice's Savings Plan coverage during this period was Amount offset / Total spend = 1.23/1.23 = 100%.
If your pay-as-you-go resources have Auto Scaling activated, 100% coverage is not necessarily optimal. Use the Savings Plan Purchase Recommendation Tool to determine your ideal coverage level.
Optimize Savings Plan based on usage and coverage
High usage, high coverage: Your Savings Plan purchase is well aligned with your needs, maximizing cost savings without waste.
High usage, low coverage: There is likely potential to increase savings by expanding the Savings Plan's commitment.
Low usage, low coverage: It's possible that you're missing out on significant potential savings. Adjusting usage to align with the Savings Plan will reduce losses.
Low usage, high coverage: Your Savings Plan's commitment may be too high. Consider reducing the commitment or exploring other Savings Plan options to match your business needs.