Lifecycle Services and Azure, a recipe for success. . .

LCS enables closer collaboration, helps speed implementations and reduces time to value.

Who doesn't like that?  

This user guide is somewhat of date since it was published in 2014. You may still download if you wish. 

There is not a  current downloadable document for LCS, only a webpage with the highlights and instructions here:  https://docs.microsoft.com/en-us/dynamics365/fin-ops-core/dev-itpro/lifecycle-services/lcs-user-guide

and here:  https://docs.microsoft.com/en-us/dynamics365/fin-ops-core/dev-itpro/lifecycle-services/lcs-works-lcs