Containment in OpenVZ refers to the isolation of containers from each other and from the host system. Each container behaves almost as a standalone server running its own operating system and software, with its own users, IP addresses, files, processes, and configuration files. This feature helps to prevent processes running inside a container from impacting processes running in another container or on the host system. It also provides strong security for each container, as a problem with one container does not affect the others.
