[wbsun]

> We serve over 300,000 businesses. We processed $248 billion in transaction volume in 2025 on $650 million in annualized revenue

> The system we've built has worked well for years, through hypergrowth, through the SVB crisis that sent $2 billion in new deposits our way in five day.

This is a strange way to describe a transaction processing system with total amount of money it processed. The reliability or scalability is not measured as O(n) dollars. In theory, $248bln or $2bln can be done in one transaction although I know it is not the case in reality. It would be impressive to see the typical system design properties like transactions per second, latency distribution, etc.