Amazon EC2 announces interruptible Capacity Reservations

Today, Amazon EC2 announces interruptible Capacity Reservations to help you better utilize your reserved capacity and save costs. On-Demand Capacity Reservations (ODCRs) help you reserve compute capacity in a specific Availability Zone for any duration. When ODCRs are not in use, you can now make them temporarily available as interruptible ODCRs, enabling other workloads within your organization to utilize them while preserving your ability to reclaim the capacity for critical operations.

By repurposing unused capacity as interruptible ODCRs, workloads suitable for flexible, fault-tolerant operations—such as batch processing, data analysis, and machine learning training can benefit from temporarily available capacity. Reservation owners can reclaim their capacity at any time, while consumers of interruptible ODCRs will receive an interruption notice before termination to allow for graceful shutdown or checkpointing before.

Interruptible ODCRs are now available at no additional cost to all Capacity Reservations customers. Refer to the AWS Capabilities by Region website for the feature's regional availability. CloudFormation support will be coming soon. For more details, please refer to the Capacity Reservations user guide.