Optimal instance type configuration to receive automatic instance family updates
Note
Starting on
11/01/2025
the behavior of optimal is going to be changed to match
default_x86_64. During the change your instance families could be
updated to a newer generation. You do not need to perform any actions for the
upgrade to happen.
AWS Batch supported a single option in instanceTypes for optimal to match
the demand of your job queues. We've introduced two new instance type options:
default_x86_64 and default_arm64. We will use default_x86_64 if
you make no instance type selection. These new options will automatically select
cost-effective instance types across different families and generations based on your job
queue requirements, allowing you to get your workloads running quickly.
As sufficient capacity of new instance types become available in an AWS Region, the
corresponding default pool will be automatically updated with the new instance type. The
existing optimal option will continue to be supported and is not being
deprecated, as it will be supported by the underlying default pools to provide updated
instances going forward. If you are using 'optimal, no action is needed on your
part.
However, please be aware that only ENABLED and VALID Compute Environments (CEs) will be
automatically updated with new instance types. If you have any DISABLED or INVALID CEs, they
will receive updates once they are re-enabled and set to a VALID state.
