When a business grows, the burden on payment systems increases. Only serious solutions with a scalable architecture can withstand millions of operations without failures. I recently read article https://en.cryptonomist.ch/2025/04/29/mastercard-and-stablecoin-the-revolution-of-digital-payments/ , which explained which technologies make it possible to process huge volumes and why this is important for companies with a large number of customers. It was interesting and understandable even to me, although I'm not an IT guy. I advise you to take a look, it will be useful for understanding.