Scaling Yelp from 0 to 139M Unique Visitors

Not quite the in-depth technical breakdown article I was expecting. I am a big scale nerd, so I love reading the finer details of how a company like Yelp managed to scale and build out its product. I guess you had to be at the talk to get the finer details.

I would love to know more about size of data, languages used, size of teams involved and how things like front-end dependencies are managed. Perhaps a follow-up article?