Your account runs 90 EC2 instances in eu-west-1 today but will move those workloads to eu-west-3 in two months. The company wants to lower EC2 spend and is willing to commit for 1 year starting next week. You need a purchasing option that gives discounts for these 90 instances regardless of region during that 1-year term. Which option satisfies this?

A Compute Savings Plan is the correct choice because it offers the most flexibility and cost savings for this scenario. It provides discounts for EC2 instances regardless of instance family, region, or operating system, as long as the usage commitment (e.g., $10/hour) is met. This directly addresses the requirement to move workloads between regions (eu-west-1 to eu-west-3) while maintaining the discount. EC2 Standard Reserved Instances are tied to a specific instance family and region, making them unsuitable for a regional migration. EC2 Convertible Reserved Instances offer flexibility in changing instance family, OS, and tenancy, but are still tied to a specific region. An EC2 Instance Savings Plan offers discounts for a specific instance family in a given region, which would not apply once the instances move to eu-west-3.