I have an EC2 instance that I plan to run continuously, with few interruptions, over a long period of time. How do I purchase a Reserved Instance?

You can purchase an EC2 Reserved Instance through the Amazon EC2 console. Note that after a Reserved Instance is purchased, it can’t be canceled, so it’s important to purchase the Reserved Instance that’s right for your needs.

Choose the right Reserved Instance

To get the maximum benefit from your Reserved Instance purchase, the Reserved Instance must match the attributes of a running instance on your account. For information about the attributes that must match, see Amazon EC2 Reserved Instance Types.

For an overview of the on-demand EC2 hours you're currently using by instance type, consider using Cost Explorer's Reserved Instance Utilization Reports.

Trusted Advisor can also recommend Reserved Instances for you based on your usage. For more information, see Cost Optimization on Trusted Advisor Best Practices (Checks).

Purchase a Reserved Instance from the EC2 console

You can purchase a Reserved Instance from AWS directly or from a third-party seller on the Reserved Instance Marketplace.

When you purchase a Reserved Instance that includes an upfront cost, your default payment method will be billed immediately as a separate invoice. The upfront payment must be charged successfully before your Reserved Instance will activate.

For step-by-step instructions about purchasing a Reserved Instance and more information about the Reserved Instance Marketplace, see Purchasing and Using a Reserved Instance.

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Published: 2016-04-08

Updated: 2017-12-07