Architecting in the Cloud

So I am starting to investigate architecting an app for AWS. I have the basics of EC2, S3, SQS, RDS, Simple DB (now replaced by DynamoDB). But I had some lingering questions about architecting solutions for the cloud as I am always a believer that "There ain't no such thing as a free lunch"

So I came across the following wonderful talk on YouTube and the associated slides on Slideshare.
I figured I'd share all the links here for easy access. Enjoy!

Architecting in the Cloud by Simone Brunozzi

AWS Cloud Tour, July 2011

Part 1

http://www.youtube.com/watch?v=vJ6XvQ94UnM

Part 2

http://www.youtube.com/watch?NR=1&feature=endscreen&v=KL7KI1JQliY

Part 3

http://www.youtube.com/watch?feature=endscreen&NR=1&v=5hXnoNGnlFQ

Part 4

http://www.youtube.com/watch?NR=1&feature=endscreen&v=RHVFARV5mrc

Part 5

http://www.youtube.com/watch?NR=1&feature=endscreen&v=k84spxyTQ_s

Slides on Slideshare

http://www.slideshare.net/AmazonWebServices/2011-aws-tour-australia-architecting-for-the-cloud-demo-and-best-practices-by-simone-brunozzi