We’ve all heard the phrase, “Every company is a fintech.” But these days, that’s becoming more and more true as an increasing number of companies that are not even in the financial services space seek to add a fintech component to their offering. A group of startups poised to benefit from this shift are those offering banking as a service. One such startup, Unit, has raised $51 million in a Series B round to further its goal of making it possible for companies and fintechs alike to build banking products…