A cloud application has been in production for six months without any issues. Shortly after increasing the number of users assigned to the application, however, users start reporting errors. The…

The question states that "resource thresholds" are not exceeded, implying that existing resources are not at their limits, so failed autoscaling is less likely if resource metrics appear normal.

While possible in some scenarios, IP address limitations are less commonly the primary cause of general application errors due to increased user load when other resource metrics are reported as healthy.

License exhaustion would typically prevent new users from accessing the application or certain features, rather than causing general 'errors' for users who are already assigned and trying to use it.

Increasing the number of users dramatically increases network traffic. Even if CPU, memory, or storage thresholds are not breached, the network link's capacity (bandwidth) might be overwhelmed, causing delays and errors for users due to bandwidth saturation.