I'm not suggesting they don't have engineering challenges, but if you stack ranked the engineering challenges by difficulty across Airbnb, Uber/Lyft, Google, FB, Netflix, Amazon, Dropbox, Pinterest, etc. I don't see how Airbnb would not very easily rank last by a long shot.
Airbnb is basically just a prettier craigslist with a payment transfer mechanism and messaging. It isn't to say it isn't a great business, just that the "tech" part of it is not really much more than a web app.
Airbnb is basically just a prettier craigslist with a payment transfer mechanism and messaging. It isn't to say it isn't a great business, just that the "tech" part of it is not really much more than a web app.