The reason why it's particularly interesting to me, i.e. to someone with a dev background, is that the lean startup wisdom says you should be very specific about the customer you're after and Uploadcare seems like a solution targetted at a broad spectrum of customer segments. Of course, I'm happy to be proved wrong if there are one or two dominant customer segments that you address Uploadcare to. Also, you might have as well started out with a very specific customer persona and spread to other segments. Whatever it was, curious to know.

I guess many developers dream up products targetted at developers like them selves. Selling to fellow developers is hard. It would be great to read a success story for a change.