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In Pictures: 5 things we love about Fedora 18 / 5 ...
2. Built-in virtualization
Fedora 18 also comes with SecureContainers, which allows applications or services to run in isolated, self-contained environments. This feature, which was first introduced in Fedora 17, is useful when the operating system is on a machine that say, runs multiple web servers simultaneously. In effect, this provides a form of built-in virtualization.
In Pictures: 5 things we love about Fedora 18 / 5 things we hate