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AWS EC2 to let AMI owners specify compatible instance types starting September 2026

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Starting September 4, 2026, Amazon EC2 will allow AMI owners to explicitly declare supported or unsupported instance types. This new InstanceTypeSpecification feature will block incompatible launches at the RunInstances API call. The change aims to prevent launch failures where instances boot but later crash due to hardware or software incompatibility. It centralizes compatibility enforcement at the AMI level, eliminating the need for duplicate IAM or SCP rules across accounts. The feature will be available at no extra cost across all AWS regions.

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