Because I am curious. I love to read about what stack each company chooses to use and why. And even more so for brand new companies that start from scratch and

Because I am curious. I love to read about what stack each company chooses to use and why. And even more so for brand new companies that start from scratch and have so many options. For example, did they use RethinkDB for the real time features? Or something more conservative like RabbitMQ? How about their primary data store? Postgres? MySQL? Or something more trendy? What about the language? Python? Node.js? Something more adventurous, like go? Why? No, I am not affiliated in anyway with them. If you google my username you will see my project, which has nothing to do with them, and is a bit too Xrated for HN.