Hello HN. First question here so if possible take it easy on me :)<p>Main question is how can one start to process payments from many to many. Does one work directly with visa api or through a bank? And what are the security conditions that one would need to abide by(nuclear resistant datacenter etc).<p>Thank you in advance.
Take a look at FastSpring. Global coverage for developer clients, their end users, payment methods/currencies located all around the world, and an embedded store SDK used to power such app stores as Adobe's new Exchange. Pricing includes international payment costs, int'l tax management, pci compliance, chargeback fees, file hosting, unlimited support, and all the merchandising functionality. Developers save months to years of work because it's an all-in-one service, the features are already there for the developer selling one time or recurring based payment products and services globally.
If you're building a marketplace thing, take a look at Balanced [1]<p>Otherwise, take a look at Stripe [2]<p>If you're not in the U.S, it get's more complicated.<p>[1] <a href="https://www.balancedpayments.com/" rel="nofollow">https://www.balancedpayments.com/</a>
[2] <a href="https://stripe.com" rel="nofollow">https://stripe.com</a>