AWS EC2 instance Purchase Option:
- On-Demand,
- Reserved
- Spot
- Dedicated Instances.
On-Demand:
With On-Demand instances, you pay for computing capacity by
the hour, with no upfront payment or long-term commitment. This is ideal for
applications with unpredictable or short-term workloads.
With
Spot Instances, you bid on unused EC2 capacity and pay the Spot price, which
can be significantly lower than On-Demand pricing. This option is ideal for
flexible applications that can be interrupted.
Reserved Instances:
With
Reserved Instances, you make a low, one-time payment to reserve instances, and
in return, receive a significant discount on the hourly usage charge. This
option is ideal for applications with steady-state or predictable usage
patterns.
Dedicated
Hosts:
With
Dedicated Hosts, you have the ability to use physical servers that are
dedicated to your use. This option is ideal for applications that have specific
compliance or regulatory requirements, or for applications that require full
control over the placement of instances on specific hardware.
When
deciding on an EC2 instance purchase option, consider the cost, reliability,
and performance requirements of your application. AWS provides various tools
and resources to help you compare costs and determine the best option for your
needs