I'm sorry but what does that mean "developer focused payment processing"? From the SaaS provider perspective - less time I spend on integration with such thing

I'm sorry but what does that mean "developer focused payment processing"? From the SaaS provider perspective - less time I spend on integration with such thing is better. "Developer focused payment processing" suggests rich API with high learning curve. Not really compelling value prop... BTW - don't get me wrong. I'm not suggesting they have a bad product. I'm really curious how they can make payment processing developer focused!