This document summarizes CloudModule, a Zabbix loadable module that enables monitoring of hybrid cloud environments by integrating with Apache Deltacloud. It automatically registers host and metric information from cloud instances and supports monitoring instance details like hardware profile and state, as well as common EC2 metrics from CloudWatch like CPU utilization, network traffic, and disk usage. The module architecture involves Zabbix communicating with Deltacloud and AWS through the CloudModule to discover instances and metrics and store them in a shared CloudCache.