Summary of impact: Between 07:50 GMT and 12:18 GMT on 14 June 2022, monitoring systems reported intermittent IRP website availability. IRP website performance and/or availability may have been impacted.
Root cause: Azure Front Door, on which IRP websites are dependent, experienced a surge in traffic resulting in connectivity issues. Errors being reported by IRP's monitoring included certificate issues and connection resets/timeouts.
Party Responsible: Azure - IRP websites are dependent on Front Door. Certificates and network connectivity are managed by Azure as part of Front Door.
Mitigation: Azure re-balanced traffic and scaled-out the service to meet the extra unexpected demand.
Resolution: Azure re-balanced traffic, scaled-out the Front Door service and continues to monitor for further impact. Azure is continuing to investigate the full root cause to prevent future occurrences.
Further Information: Azure status history can be found at https://status.azure.com/en-us/status/history/