The New York-based startup, which provides digital payment infrastructure for financial institutions so they can offer virtual cards to their users, has raised $40 million in a Series B funding round led by March Capital. The 42-person company has also developed a “developer-friendly” API catalog which Jamison says is giving issuers a way to offer APIs to its customers. So far, Extend has more than 2,000 business customers currently using its applications, is growing 30% month-over-month and has a run rate of “close to $2 billion dollars” in processing volume, or the spend clients are making on its virtual cards, according to the company. , said Jamison.Extend Extend is one such company.