You can use committed use discounts (CUDs) with clusters in Ocean and groups in Elastigroup. CUDs help you make efficient use of your cloud spending. This article explains where you can use CUDs and how Ocean and Elastigroup optimize your commitment usage. CUDs are not supported for virtual node groups.

Ocean support for committed use discounts

Ocean helps you optimize your CUDs so you reduce waste and improve cost efficiency. Ocean analyzes commitment utilization and allocates resources strategically to help you get the most value from your discounts.

Key benefits

Ocean provides visibility into CUD utilization for both spend‑based and resource‑based commitments. This helps you understand where savings occur and how to use unused commitments effectively.

How Ocean optimizes your commitments

Ocean uses commitment information to guide scaling behavior:

• Scale up
  Ocean checks your commitment usage and launches on‑demand virtual machines when a commitment can be utilized. This helps you make use of existing discounts before you add more resources.

• Scale down
  Instances that use commitment plans are prioritized during scale down so your commitment strategy is preserved.

• Revert to reserved
  Ocean checks if any spot instances can be replaced with on‑demand instances that use commitments and performs the replacement when appropriate.

Supported commitment types in Ocean

You can use the following GCP commitment types in Ocean:

• Resource‑based and spend‑based commitments

• Spend‑based commitments only

• Resource‑based commitments that use a billing account

Elastigroup support for committed use discounts

Elastigroup also helps you optimize your CUDs to make the most of your resource commitments. Like Ocean, Elastigroup uses commitment information to reduce waste and improve cost savings.

Key benefits

Elastigroup improves visibility into savings plans, reserved instance utilization, and commitment efficiency. This helps you understand how your commitments are used across your workloads.

How Elastigroup optimizes your commitments

Elastigroup applies commitment strategies automatically:

• Scale up
  Elastigroup uses commitment utilization status to determine when to scale up on‑demand virtual machines instead of spot instances. This helps you use existing commitments first.

• Scale down
  Instances that use commitment plans are given priority during scale down so your commitment allocation remains optimized.

• Revert to reserved
  Elastigroup checks whether any spot instances can be replaced with on‑demand instances that use commitments and performs replacements when appropriate.

Supported commitment types in Elastigroup

Elastigroup supports the following GCP commitment types:

• Resource‑based and spend‑based commitments

• Spend‑based commitments

• Resource‑based commitments with a billing account

Virtual node group support

CUDs are not supported for virtual node groups.