What happens to custom metrics from Dynatrace OneAgent-monitored hosts regarding DDUs?

When it comes to custom metrics generated by Dynatrace OneAgent-monitored hosts, these metrics initially draw from a quota of included metrics before they begin to consume additional DDUs (Dynatrace Data Units). This means that if you have a certain number of metrics that are included as part of your subscription plan, any custom metrics created will first use up that allowance. Only after this quota is exhausted will the consumption of DDUs for those custom metrics take effect.

Understanding this mechanism is crucial for managing your monitoring costs effectively and ensuring that you do not unexpectedly exceed your DDU limits. This structure encourages users to utilize the predefined metrics included in the plan to optimize their usage of custom metrics, helping to keep costs in check while still gaining valuable insights into application performance.