For some somewhat agnostic overviews of tooling and processes that can support continuous deployment in practice...these presentations may be of interest:
While many companies have stringent regulatory constraints that require more thoughtful and methodical approaches to deployment, I thought it worth noting how Etsy.com implemented a RADICAL (!) DevOps culture - as an inspiring example to challenge status quo thinking of "but-that's-not-the-way-we-do-things-here..."
A Wikipedia article - providing a sparse summary/survey of some open source solutions for automated deployment tooling...
There is a great deal of fast-paced innovation in the tooling space for deployment & configuration management – here are some of the tools (slightly listed in order of what I find to be interesting and innovative)…
Microsoft System Center 2012
Less sophisticated, but perhaps a good example of how some shops can still make improvements over manual processes...even if it is just by doing things with bare-bones scripting…for example, via Rex