“Not only are we allowing fintechs to go to market faster than any bank or card issuer could ever dream of doing, but we’re also really showing that our incentives are very much aligned,” said Mlambo. “We only make money when they do and that’s why we’re happy to give a guarantee with that interchange.”

https://techcrunch.com/2021/10/27/tiger-global-leads-3m-round-in-zambias-union54-for-its-card-issuing-api/