At the AWS PopUp Loft in Berlin I gave a talk on why load and performance testing is still (or especially) relevant in the era of cloud infrastructure. The presentation was given on 23.10.2015.
Abstract: The Cloud™ is infinite and scalable. Period. Why is it important to test for performance and scalability characteristics of a cloud-based system? Won't AWS scale for me as long as I can afford it to? Yes, but… AWS only operates and scales resources. They won't automatically make your system fast, stable and – more importantly – scalable. Performance Testing is crucial to understand your system and architecture design and your cloud hosting environment.