Hey @Lalit M.,
What do you mean by class specifically? Dynatrace uses AI to detect what's normal usage and what's not for a service/infrastructure, etc. and the anomaly detection settings alert based off the settings compared to what's normal for that class or service. So if a class/service is typically only loaded/used once every 30 minutes, then the anomaly detection settings will alert based off once every 30 minutes being the base/normal.