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Below image shows the key difference between traditional virtualization and containers,
Why Use It?
In nutshell LXC is (blurb). LXC is in between a VM and a pure application container. It will take up more resources than a pure container, but unlike a VM use as much memory as needed. It will provide a full kernel and OS (albeit it must be Linux). Unlike a VM, LXD container will have access to the resources and speed of the hardware without needing to emulate hardware.. If you are interested in Docker or Cloud, not yet ready to give up your ssh console start here. Learning LXC, you'll also really understand how Docker and Cloud works under the hoods.
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