- “Compute Savings Plans offer the most flexibility and can help you reduce your costs up to 66% (just as Convertible RIs). The plans are applicable to all EC2 instances regardless of location, instance family, operating systems, or tenancy. This includes those that are part EMR, ECS or EKS clusters or launched by Fargate. You can, for example, shift from C4-C5 instances, move a work load from Dublin to London, or migrate EC2 to Fargate without having to do anything.
- The “EC2 Instance Savings Plans” apply to a particular instance family within a given region and offer the highest discount (up to 72%), just like Standard RIs. Your savings plan, just like RIs covers different size instances (such as a C5.4xlarge or C5.large) within a given region. You can switch from Windows to Linux and still benefit from your savings plan, but you don’t have to make any changes.
He also explained how to use AWS Cost Explorer for selecting and purchasing a Savings Plan.