Finix, a startup that enables other startups to manage their payments stack in-house, just nabbed $35 million in a Series B led by Sequoia Capital. Finix offers an alternative for businesses who want to process payments. Instead of relying on — and paying — the likes of Stripe or Square to process your payments, businesses can buy a payments stack from Finix. The startup's CEO told Business Insider that by using Finix' payments stack, businesses can access the revenue that comes from processing payments without the heavy infrastructure investment of building out the tech itself.