Stablecoins are redefining financial product development by allowing instant settlement and programmable features, leading to new business models and opportunities in finance. The article compares the traditional Banking as a Service (BaaS) stack with the emerging stablecoin stack, highlighting the transformative potential of stablecoins in the financial services landscape. It emphasizes that while traditional banking infrastructure won't disappear, stablecoins offer a unique platform for innovation in financial products.