Amazon's Journey to the Cloud (by John Rauser)
Interesting history of how Amazon evolved from 1994 to about 2011 on the technology side.
Enjoyed the comparison of successful software development to the development of the Gossamer Condor where the recovery from failure was optimized.
Rauser is a big fan of Continuous Deployment.with pointers to Eric Reis and Timothy Fitz.
Also mentioned is performance analysis and how important site performance is as described in the presentation (2009) by Eric Schurman (Microsoft / Bing) and Jake Brutlag (Google).