How can you set up automatic tagging in Dynatrace?

The ability to set up automatic tagging in Dynatrace is accomplished by configuring automatic tagging rules within the user interface. This feature allows users to define specific criteria based on the attributes of monitored entities, such as applications, services, hosts, or cloud resources. Automatic tagging helps in organizing and categorizing entities more efficiently, facilitating better management of monitoring data.

By using the UI, users can easily access and modify tagging rules, making it straightforward to implement and adjust tagging strategies as requirements change. This method leverages the flexibility of the Dynatrace environment, allowing for dynamic adjustments without needing deep technical knowledge or engaging with more complex command-line operations or manual interventions.

The other methods, such as configuring through a command line interface or editing configuration files, do not provide the same level of accessibility and convenience for automatic tagging as the user interface does. Furthermore, manual tagging requires intentional actions for each entity, which is not as efficient or scalable as an automatic tagging approach, especially in large environments. Thus, option B is the correct approach to establish a system of automatic tagging in Dynatrace.