EC2 instances and EBS volumes already attached to the instances on the Outpost will continue to operate normally and can be accessed locally through the local gateway. Similarly, AWS service resources such as ECS worker nodes continue to run locally. However, API availability will be degraded, for instance run/start/stop/terminate APIs may not work. Instance metrics and logs will continue to be cached locally for up to 7 days, and will be pushed to the AWS Region when connectivity returns. Disconnection beyond 7 days however may result in loss of metrics and logs. If you expect to lose network connectivity, we strongly recommend regularly testing your workload to ensure it behaves properly in this state when an Outpost is disconnected. For S3 on Outposts, all requests are authenticated and authorization using the regional AWS Identity and Access Management (IAM) service, then securely cached locally on the Outpost when used with SigV4. If the Outpost has no connectivity to the home AWS Region, existing users can continue to operate on existing buckets with all object operations for up to 12 hours. During disconnected periods, you can add and delete objects, but cannot create or add new buckets, new users, or change bucket policies. Once connectivity is restored, you can resume all bucket management updates.