In Amazon Web Services (AWS), what instance type would give you the cheapest possible EC2 instance?

In Amazon Web Services (AWS), what instance type would give you the cheapest possible EC2 instance?

• Dedicated Host
• Reserved Instance
• Spot Instance
• On Demand Instance 

 

EXPLANATION

Reserving instances in AWS will allow a user to purchase dedicated EC2 instances with contracts for either 1 or 3 years for a significant cost saving (up to 75%) of the on-demand instance price.

Spot Instances allow the user to set a bid-price that they are willing to pay for an instance. The bid price will vary from hour to hour, and when the price drops below the users bid-price, AWS will give access to the instances, however, if the price were to go up back above the bid price, the instance will be terminated. As a result these instances are typically only for very flexible applications such as big data, containerized workloads, CI/CD, web servers, high-performance computing (HPC), and other test & development workloads. Because Spot Instances are tightly integrated with AWS services such as Auto Scaling, EMR, ECS, CloudFormation, Data Pipeline and AWS Batch, you can choose how to launch and maintain your applications running on Spot Instances.

SOURCE

https://aws.amazon.com/ec2/pricing/