“Understanding who you serve is always a very important problem, and it only gets harder the more people that you serve. We try to pay a lot of attention to this by a combination of very rigorous quantitative and qualitative feedback. But if you’re serving 1.2 billion people, it’s very hard.”— Mark Zuckerberg, bits.blogs.nytimes.com
“A query that used to take over an hour can run in seconds on the cache.”— Periscope Data, periscopedata.com