The number of IT systems is steadily increasing. Every day, new servers and devices are being deployed in our networks. However, the number of people managing these networks is not growing at the same rate. To ensure that systems and networks remain stable, effective and efficient monitoring becomes a crucial factor. A monitoring solution that has proven itself for more complex tasks in companies is the open-source monitoring system Zabbix, which has been available for over 10 years. In this book, you will learn everything about monitoring with Zabbix. In addition to the basics, specialized topics such as scaling, tuning, and extending a Zabbix server are also explained. With numerous concrete examples from his professional practice, the author illustrates working with Zabbix and also incorporates the essential innovations of version 3. The content is aimed equally at.