Azure API Management instances can experience downtime during certain operations, such as scaling from or to the Developer tier. However, the context provided does not mention any automatic upgrades causing downtime specifically on December 16, 2025. It is important to note that changes to the API Management service's infrastructure can take 15 minutes or longer to complete, but instances in the Developer tier may experience downtime during this process. For other tiers, the service continues to operate without interruption during infrastructure changes.
If you are concerned about potential downtime during upgrades or scaling, it is advisable to monitor the service and plan accordingly.
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