There's probably a lot of work to do around security, reliability, availability, consistency, and auditability. When you're handling money for other people, yo

There's probably a lot of work to do around security, reliability, availability, consistency, and auditability. When you're handling money for other people, you're a major hacking target, and the standards for reliability are much higher than your typical SaaS. You need to make sure that every transaction happens exactly as requested and that you can recreate exactly what happened when in case of questions and concerns.