Which AWS purchasing option will optimize the company’s costs?

Explanations:

Convertible Reserved Instances provide a discount for committing to a specific instance type and region, but they may not be ideal for a serverless migration.

Spot Instances offer low-cost capacity but are not suitable for long-term or predictable workloads, making them unsuitable for paying upfront for a serverless migration.

EC2 Instance Savings Plans provide savings for EC2 instances based on a commitment to a specific instance family or region, but they don’t apply to serverless resources.

Compute Savings Plans offer the flexibility to commit to a specific amount of compute usage across AWS services, including EC2, Lambda, and serverless resources.