In Zabbix, templates play a major role in simplifying the configuration and allowing large scale changes. If you are a proficient user of word processors, you probably use styles. The same concept is used in TeX, CSS styles for the Web, and elsewhere—separating content from the presentation helps to reduce the amount of work required when changes have to be made.
While the comparison to styles might seem far-fetched at first, it actually is similar enough. Just like styles, you can separate a host from the services you provide, and you can define these services in a centralized fashion. In the same way as a word processor document having a heading style that allows changing font size for all headings of that level with one action, templates in Zabbix allow changing some parameter for all linked hosts, direct or nested.
We used several locations that allow modifying template linkage in Zabbix:
Host properties: This allow to link, unlink, and unlink and clear multiple templates to a...