Corporate card startup Brex is raising money at a valuation above $2 billion

Visa’s recent green light from U.K. regulators to complete its Earthport acquisition was more than just the clearing of a regulatory hurdle — it was a revealing look at how important it has become for the card networks to diversify.

FIS’s $43 billion agreement to acquire Worldpay and Fiserv’s $22 billion deal to buy First Data are largely closing the gaps between financial technology and merchant acquiring. But these mergers are only the first of many steps.