The link says “We are currently unable to remove the A line service alert from our website and app” because of the AWS outage, but doesn’t say or imply that AWS affected the actual train.
NB: this requires a careful reading: the AWS outage didn't cause trains to stop running.<p>The NYCT authority issued an alert visible on their website and transit app about the A-line service. The AWS outage meant that they were temporarily unable to remove that alert.