On June 19 2013 Johan Bergström, Associate Professor at our department, gave a keynote speech on the topic "What, Where and When is Risk in System Design?" The keynote was given at "Velocity" in Santa Clara, CA; a conference focusing on web operations and performance, and some of the Johan's examples  focus on this domain. The keynote was recorded and later published on Youtube by the publisher O'Reilley, which also give us the possibility to publish the keynote here on our website. Enjoy!