AWS 新的折扣方式 (Saving Plans)

前幾天看到 AWS 推出新的折扣方式,也就是「New – Savings Plans for AWS Compute Services」這篇。裡面給了兩個新的折扣模式:

  • Compute Savings Plans
  • EC2 Instance Savings Plans

首先是 Compute Savings Plans,不限制地區,而且包括了很多類型的服務,不僅是 EC2

The plans automatically apply to any EC2 instance regardless of region, instance family, operating system, or tenancy, including those that are part of EMR, ECS, or EKS clusters, or launched by Fargate.

而 EC2 Instance Savings Plans 則是只有在 EC2 上使用,需要指定地區與機型:

Just like with RIs, your savings plan covers usage of different sizes of the same instance type (such as a c5.4xlarge or c5.large) throughout a region.

就目前的理解來看,EC2 Instance Savings Plans 其實就是換個包裝的 Regional RIs,因為 Regional RIs 本來就可以給同個 family type 使用 (沒有使用到的 c5.xlarge RI 可以拿到 c5.2xlarge 使用,照比率抵一半計算,另外一半照正常價錢)。

Compute Savings Plans 算是新的東西,你給個 hourly commit 付錢後,很多服務都可以使用這筆 hourly commit 折抵。

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