Salt is, at its core, a remote execution technology, but it's much, much more than that. It's also ideal for central configuration management. When pushing configurations to thousands of servers, you want an application that's as efficient as possible. Salt, built on ZeroMQ, delivers. Modular and easily adaptable, Salt is what the serious sys-admin wields to discipline his/her servers, and keep them beat into shape.
Salt has become one of Lintel's most popular tools, particularly when our clients need fast, powerful remote system configuration to manage their information infrastructures. Lately, our default approach has been, "Build it with Salt, and build it right."