Published at LXer:

Back in April, a startup company called FastScale Technology came out of stealth mode with a different twist on the virtualization game. Rather than virtualize a whole software stack, FastScale Composer Suite builds a stack from the actual bits of software used by applications and puts it in a container; if an application doesn't use a library or application, it doesn't go into the DAB container. An Apache software stack running on Linux takes about 3 GB, including application code as well as Linux, drivers, and Apache. In a DAB, this Linux-Apache stack shrinks down to 20 MB.

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