Incident Initiation
At 8:29 PM CET on April 21, 2025, an issue was identified impacting availability of our Templafy One application hosted on Azure App Services in the North Europe region. The issue resulted in connectivity drops for end users, causing temporary disruptions in service. The incident was attributed to unplanned maintenance initiated by Azure without prior notice.
Investigation
Upon noticing the service disruptions, the engineering team began monitoring the application and associated Azure resources. Logs and metrics indicated availability drops aligning with the start time of the incident. Further investigation confirmed that the root cause was an unplanned hotfix applied by Azure App Services, as communicated in an official Microsoft Azure service notification (Tracking ID 1VZN-PBG). The maintenance activity began shortly after 7:00 PM CET on April 21, 2025 and was performed during non-business hours.
Mitigation and Resolution
No action was required from our side as the issue was caused by Azure infrastructure maintenance. The event concluded at 10:58 PM CET on April 21, 2025, with all services stabilizing post-maintenance. The application automatically recovered once the underlying Azure App Services instances resumed normal operation.
Impact and Scope
The incident was limited to Templafy One. User Experience: Users may have experienced temporary unavailability or connectivity interruptions during the maintenance window between 8:29 PM and 10:58 PM CET.