Indian-American computer scientist Sanjay Ghemawat is leaving Google after 27 years. A key architect of the company's infrastructure, he has co-founded AI venture Discovery Loop with ex-Google Chief Scientist Jeff Dean. Ghemawat, who grew up in Kota, earned his undergraduate degree from Cornell University in 1987 and a PhD from MIT in 1995. He co-created Google File System and MapReduce.