URS HÖLZLE is Google’s senior vice president of technical infrastructure and a Google Fellow. He oversees the design and operation of the servers, networks, and data centers that power Google’s services, as well as the development of the software infrastructure used by Google’s applications. Lately, he’s spending his time helping to define and build Google Cloud Platform, Google’s public cloud offering, which makes the infrastructure his team pioneered at Google available to developers around the world. Through efficiency innovations, Hölzle and his team have reduced the energy used by Google data centers to less than 50% of the industry average. Compared to five years ago, Google now gets 3.5 times the computing power out of the same amount of energy. In addition, Hölzle manages many of Google’s other green initiatives, including the company’s purchases of renewable energy for its operations. He served on the Board of Directors of WWF-US from 2009 to 2018. Hölzle grew up in Switzerland—selling WWF stamps to fundraise for conservation—and received a master’s degree in computer science from ETH Zurich and a PhD from Stanford. He is one of the inventors of the fundamental techniques used in most of today’s Java compilers and he taught computer science at the University of California, Santa Barbara.