So far in previous chapters, we have seen how to add hosts, create items, and add triggers to those items. Now imagine you have 10 servers with PostgreSQL and you want to monitor them. What will you do? You possibly will create items for each host to gather data and add triggers for each item. We then could copy all items and triggers 10 times to all other hosts. But what if you need to make changes? You will change it again on all hosts individually? What if we have to do this on 100 hosts, program something with the API? To make our life easier, we have templates in Zabbix. With templates we only have to create 1 item and 1 trigger. We can then link this template to all our hosts and reuse all our work over and over.