You know how groups works in Centreon user interface and you want to optimize your configuration and/or exploit as well as possible the Centreon BI and Centreon Map modules, you should read this article!
The concepts of groups (hostgroups, servicegroups, contactgroups) was previously defined in the “Bests Practices: How to use groups of objects in Centreon” article. We will not get back on these concepts.
A category is look like a group of objects but having the distinction of being used to filter a subset of elements and not to select objects. There are two types of categories: for the hosts and for the services.