Steve works at SpeedCurve on the interplay between performance and design. He previously served as Google’s head performance engineer, chief performance Yahoo!, and chief performance officer at Fastly. Steve has pioneered much of the work in the world of web performance. He is the author of High Performance Web Sites and Even Faster Web Sites. He is the creator of many performance tools and services including YSlow, the HTTP Archive, Episodes, ControlJS, and Browserscope. Steve taught CS193H: High Performance Web Sites at Stanford and serves as co-chair of Velocity, the web performance and operations conference from O’Reilly.
John Allspaw has worked in software systems engineering and operations for twenty years in many different environments: biotech, government, online media, social networking, and e-commerce. He started out tuning parallel clusters running vehicle crash simulations for the U.S. government, and then moved on to the Internet in 1997. He built the backing infrastructure at Salon.com, InfoWorld.com, Friendster, and Flickr, and Etsy. He served as SVP of Engineering and then Chief Technology Officer at Etsy, and holds an MSc in Human Factors and Systems Safety from Lund University.
Courtney manages all Velocity-related content for O’Reilly Media. An erstwhile academic neuroscientist, she is still fascinated by the brain and how people learn just about anything. She’s been known to teach people how to salsa dance, conduct psychology experiments, or even get air on a mountain bike. When not working on books, Courtney can be found biking, hiking, skiing, and photographing the Cascade Mountains near her home in Bellingham, Washington.