Anaplan experienced a minor incident on December 10, 2025 affecting ap1: Cloud - Japan, lasting 33m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Dec 10, 2025, 02:02 PM UTC
We are currently investigating an issue causing intermittent slow performance for customers accessing their workspaces on the Anaplan Platform. We are working to resolve this issue as quickly as possible and will provide updates every 30 minutes or upon resolution.
- monitoring Dec 10, 2025, 02:18 PM UTC
Service has now been restored; you should now be able to resume normal activities. We will continue to monitor the platform to ensure no additional issues arise. If you have any questions, concerns, or continue to experience issues, please do not hesitate to contact Anaplan Support. We will provide a final update to you when we consider this situation fully resolved.
- monitoring Dec 10, 2025, 02:25 PM UTC
We are continuing to monitor for any further issues.
- resolved Dec 10, 2025, 02:36 PM UTC
We have confirmed that the issue is now resolved. We deeply apologize for any impact this issue may have caused. We appreciate your patience and partnership as we worked through this issue. We will follow up within 7 business days with a detailed root cause analysis (RCA) that will be shared on our Status Page. If you have any question or concerns, please do not hesitate to contact us at Anaplan Support.
- postmortem Dec 18, 2025, 04:59 PM UTC
On December 10, 2025, beginning at approximately 13:30 UTC, an issue within Google Cloud's infrastructure caused service degradation for the Anaplan platform. As a result, customers in our AP1 \(Japan\) region may have experienced intermittent platform slowness, errors when opening workspaces, and gateway timeouts. This incident was triggered by a service disruption within the Google Kubernetes Engine \(GKE\) control plane, which is managed by Google. The issue originated entirely outside of the Anaplan environment. However, as GKE is a critical component of our infrastructure, this failure had a direct downstream impact on our customers in the AP1 region. Full service was restored at 15:15 UTC. **Root Cause** Google Kubernetes Engine \(GKE\) is a foundational service that Anaplan uses to orchestrate and manage our application services. On December 10, the GKE 'control plane'—the core component that manages our services in the AP1 region—stopped responding for a sustained period. This failure prevented our application components from communicating with each other and the underlying infrastructure, leading to the errors and degraded performance that customers experienced. At approximately 15:04 UTC, Google's GKE service recovered, and our systems began to automatically return to a healthy state. **Our Response and Recovery** Our monitoring systems detected anomalies across multiple services, triggering an immediate incident response from our technical teams. Within minutes of initiating our investigation, we correlated alerts from several independent services and isolated the issue to the GKE platform outage. Throughout the event, we monitored all Anaplan services to ensure our platform components remained ready to resume service and to validate that the impact stemmed solely from the upstream provider. As the Google Cloud service recovered, we evaluated platform stability to confirm that service was fully restored for all customers in the region. **Corrective and Preventative Actions** Although this was an external infrastructure outage, we hold ourselves accountable for the experience our customers have with the Anaplan platform. We are taking several steps to strengthen our resilience: * We are in direct partnership with Google's engineering leaders to conduct a thorough post-incident review. Our priority is to ensure their corrective actions are comprehensive and sufficient to prevent recurrence. * We are improving our internal visibility into provider-level infrastructure anomalies to enable earlier detection. This will help us communicate more quickly and effectively with our customers during such events. * We are evaluating architectural opportunities to reduce sensitivity to regionalized, single-provider events. We apologize for the disruption this infrastructure outage caused to your business operations. We understand that service degradation — no matter the source — has a real impact. If you have further questions or concerns, please visit our [Support website](https://www.google.com/url?q=https%3A%2F%2Fsupport.anaplan.com%2F). We appreciate your patience during this incident and value the trust you place in Anaplan.