Comment by NBJack

Hype for the engineering culture? Helps attract the right talent. It is a relatively small team that is...ah, heavily motivated to come up with good solutions around the clock. And they maintain an excellent tech blog.

Don't get me wrong; serving the level of traffic they handle isn't easy to scale or do cost-effectively around the globe. They are also considered by some to be pioneers in chaos engineering, and made headlines years ago making a competition to find the "best" suggestion algorithm.