Normal service has been restored to the orchestration system and customers can deploy as normal.
We will continue to monitor to ensure it remains operational.
Update 31/05/2018 06:45 UTC
We have restored the orchestration system and are investigating environments that have frozen builds.
Please create a support ticket at (https://accounts.magento.cloud/support) if your deployment has stuck.
We have identified an issue with the orchestration system for the us.magento.cloud region.
Customers cannot currently push code.
We expect no downtime for live sites.