Leo Zhadanovsky, a Principal Solutions Architect at Amazon Web Services, spends his days (and occasional nights!) helping customers best leverage AWS services in order to help them build highly-available, scalable and elastic architectures to fulfill their business needs. As a speaker, Leo has delivered talks at conferences around the world, including Re:Invent, OmniTI Surge, and PuppetConf. Previously (2009-2012) the Director of Systems Engineering at the Democratic National Committee, he’s also run the DNC's on-premise and cloud infrastructure, in use by the Obama campaign, state and local Democratic parties. This infrastructure was used to support hundreds of millions of dollars in online donations, and withstand significant amounts of election day traffic.