CloudLinux is an operating system specifically designed for hosting companies and optimized for shared hosting. This OS brings a lot of benefits by allowing you to improve stability, density, security, and performance of the server. With CloudLinux, you can Cage each customer in an individual virtual system and limit the amount of resources any single account can use in the system.
Cloudlinux OS SHARED version is used for integration with ISPmanager.
CloudLinux features:
Learn more in official documentaion.