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Registers or updates a scalable target. A scalable target is a resource that can be scaled out or in with Application Auto Scaling. After you have registered a scalable target, you can use this operation to update the minimum and maximum values for your scalable dimension.

After you register a scalable target with Application Auto Scaling, you can create and apply scaling policies to it with PutScalingPolicy. You can view the existing scaling policies for a service namespace with DescribeScalableTargets. If you are no longer using a scalable target, you can deregister it with DeregisterScalableTarget.