John Allspaw has worked in software systems engineering for over twenty years in many different domains: government, online media, social networking, and e-commerce. John’s publications include the books The Art of Capacity Planning (2009), Web Operations (2010) and a chapter in Human Factors and Ergonomics in Practice on HF practice in Web Operations. John holds an MSc in Human Factors and Systems Safety from Lund University. He is currently co-building Adaptive Capacity Labs, LLC.