Since only Train, Connectivity, and Experience products are using Deploy-app for release, Site-infra will close SSH access from Deploy-app to all production instance except Template instance (used by Train, Connectivity, Experience to release).
SSH access will be closed Oct 22, 2018
Also, Site-Infra will totally decommission deploy-app on November 19, 2018. Before that happen, Train, Connectivity, and Experience will move their legacy ASG infrastructure to new infra. And for its service dependants, please cooperate with them to ensure migration is done before the due date.