The Labels tab lists default and custom labels to logically group hosts when you placing the same host into more than one group. This is diametrically opposed to patterns which, should uniquely group hosts into hostgroups and are guaranteed to do so with the help of the Priority property. Default labels are indicated with the Dynatrace logo, and you cannot edit them.
You can create any amount of custom labels that fit your purpose. For example, create labels for specific operating systems, or separate labels for development, testing or production. A label cannot have the same name as a hostgroup.
Specify the label name and description in the Add Label or Edit Label dialog box.
If you create a Monitor for a label, AppMon automatically executes it for equally labeled hosts.