Tags and metadata enable you to organize your monitored environments in a meaningful way.
Metadata are mainly used for defining extra information for entities while tags are used for organizing entities. You can also create tags based on metadata
Manually Applied Tags
Once you’ve created a tag, select it from the list to tag your services, process groups, or hosts. Alternatively, you can add tags directly from individual service, process-group, and host pages.
Automatically applied tags
Rule-based tags behave just like manually-applied tags, except they’re applied automatically to new entities that match defined rules.
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