Which action will meet these requirements in the MOST cost-effective manner?
Create 1-year On-Demand Capacity Reservations in the specific Availability Zones.
Launch Amazon EC2 instances with termination protection enabled.
Purchase 1-year Reserved Instances in the specific Availability Zones.
Use a Spot Fleet across multiple Availability Zones.
Explanations:
On-Demand Capacity Reservations guarantee capacity but do not provide cost savings compared to Reserved Instances. This option is not the most cost-effective solution for a 1-year period.
Launching EC2 instances with termination protection does not guarantee capacity or cost savings, and does not address the need for a long-term resource commitment.
Purchasing 1-year Reserved Instances guarantees both capacity and a significant cost saving (compared to On-Demand pricing) for a 1-year period. This is the most cost-effective solution for the company’s needs.
Using Spot Fleet across multiple Availability Zones is not suitable for guaranteed capacity as Spot Instances can be terminated by AWS, and there is no guarantee of availability over a long period.
I sort that the answer is:
Purchase 1-year Reserved Instances in the specific Availability Zones.