Question

You are currently hosting infrastructure and most of the EC2 instances are near 90 – 100% utilized. What type of EC2 instances would you utilize to ensure costs are minimized?

A) Reserved Instances
B) On-Demand Instances
C) Spot Instances
D) Regular Instances

Answer 1

A) Reserved Instances

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.