Amazon EC2 Spot Instances

Amazon EC2 Spot Instances allow customers to save up to 90% compared to On-Demand pricing by leveraging spare EC2 capacity. Spot Instances are a good fit for fault tolerant workloads that are flexible to run on multiple instance types.

The table below shows the average interruption frequency and savings over on-demand rates over last 30 days for various instance pools. While the average frequency of interruption across all Regions and Instance types has historically been <5%, the actual interruption rate for your workloads will depend on point-in-time available capacity. You can use Spot Placement Score to get a near real-time likelihood of your Spot request succeeding in a Region or Availability Zone.

To improve your application’s availability on Spot, we recommend you to be as diverse as possible in your instance type and Availability Zone selection. You can use attribute-based instance type selection (ABS), to easily express your instance requirements in the form of attributes, such as vCPU, memory, and storage, ensuring optimal flexibility of your configuration. Please visit Spot best practices to learn more about how you can improve your Spot experience.