Matt Sornson
Co-founder at Clearbit
To be completely frank with you, what made us different was that we had an API that 1) you could sign up for with a credit card, and 2) was significantly easier to use than any of the other products out there.
REST APIs were a newish thing then, and we built five nice ones: a person API, a company API, a watchlist API, a risk API, and a logo API.
The initial idea for the company was data APIs for developers: so we’d get every different kind of company data, we'll build a really nice API on top of it, and sell that to developers.