This incident has been resolved.
Mar 24, 19:12 EDT
We're continuing to monitor the issue, but courses.edx.org and studio.edx.org are back online.
Mar 24, 13:55 EDT
Performance issues on edx.org have recovered. At this time, users in Studio will be unable to access the service. We are actively working on a fix.
Mar 24, 12:20 EDT
The issue has been identified and a fix is being implemented.
Mar 24, 12:15 EDT
We are attempting to scale up our services to manage increased load.
Mar 24, 11:38 EDT