It's no secret that Georgia has become a big player in the film industry. Far fewer people realize it's also a major player in the far more lucrative fintech space, which encompasses payments processors, online lenders, cryptocurrencies and other aspects of financial technology.

It's a fast-growing, expansive and quickly-changing industry—but still relatively obscure, even to Atlantans who've grown used to buying lunch at a food truck with a swipe of their phone.

A plethora of local law firms, businesses and government entities are promoting the city as a fintech hot spot, including King & Spalding, which held its first-ever FinTech Summit in Atlanta on Monday afternoon.