There is a requirement to host EC2 Instances in the AWS Cloud, wherein the utilization is for a duration of more than 3 years. Which of the following would you utilize to minimize the costs?

Answer options:

A.Reserved instances
B.On-demand instances
C.Spot instances
D.Regular instances

Answer – A
When you have instances that will be used continuously and throughout the year, the best option is to buy reserved instances. By buying reserved instances, you are actually allocated an instance for the entire year or the duration you specify with a reduced cost.
For more information on Reserved Instances, please visit the link:
https://aws.amazon.com/ec2/pricing/reserved-instances/