Fintech companies once chased speed above all else. They built flashy apps and quick transfers. Yet when those systems met the real world of banks, networks and regulations, they often stalled. Interoperability, the ability for distinct platforms to exchange data and value without constant custom fixes, emerged as the stubborn obstacle. Stablecoins offered one answer. Their circulating supply hit $300 billion. B2B payments on these rails reached roughly $226 billion in 2025 after filtering out trading and internal transfers. Growth hit 733% year over year. Platforms took notice. TechRadar reported how Stripe acquired Bridge and rolled out stablecoin-powered accounts for businesses in 101 countries. Deel began letting clients settle invoices in USDC or USDT at a guaranteed 1:1 rate to USD. Grab and StraitsX tested stablecoin settlement layers across Asia. These moves weren’t about hype. They responded to operating pressure.…