Which of the following is NOT a purpose of host groups?

The purpose of host groups in Dynatrace primarily revolves around organizing and managing hosts to facilitate monitoring and analysis. Defining management zones is a key function, as it allows users to create logical groupings of hosts based on their purpose or characteristics, thus enabling focused monitoring and data visualization.

Automatic updates for a host group help maintain the relevance and accuracy of the host group as it adjusts to changes in the monitored environment, ensuring that as hosts are added or removed, the host group remains current.

Filtering and tagging rules also fall under the functions of host groups by allowing users to classify hosts according to specific criteria, thereby enhancing the management and reporting processes.

On the other hand, data crunching for deeper analytics primarily refers to the analytical processing of performance metrics and logs, which is more related to the data analysis capabilities of Dynatrace rather than the organizational structure offered by host groups. Host groups themselves do not perform analytics; they serve as a way to organize hosts for better monitoring and data management. Hence, this option is identified as the one that does not align with the principal purposes of host groups.