Thanks to which technologies is containerization in Linux possible?

Containerization in Linux is possible thanks to two key technologies:

1. Namespaces — isolate processes, network, filesystem, and other resources, creating separate namespace spaces for containers.
2. Control Groups (cgroups) — limit and control resource usage (CPU, memory, disk) for groups of processes.

These mechanisms together provide resource isolation and management, allowing containers to run as lightweight, isolated environments.