To be clear, the company is still small, relatively speaking: compare its payment volume to PayPal’s for 2017 — $451 billion — and you can see it has a way to go before it will catch up. But it’s growing quickly, currently at over 35 percent annually for the last 10 years, according to Villante. The other notable detail that YapStone highlights is that by providing more than just simple payments, and helping to corral data in ways that are more useful for bookkeeping and accounting for the businesses that use it, the company is also potentially reducing some operational costs for its customers, while at the same time providing a service that they need to have in their online businesses.

https://techcrunch.com/2018/02/12/yapstone-is-raising-100m-to-take-on-paypal-stripe-and-more-in-marketplace-payments/