Financial infrastructure company Stitch has raised $25 million in a Series A funding round led by a16z, with participation from Arbor Ventures, COTU Ventures, Raed Ventures, and SVC. Stitch aims to address the limitations faced by financial institutions due to fragmented traditional systems, which slow down product launches and hinder AI integration. The company's platform seeks to unify ledgers, financial components, and business processes, enabling institutions to build and operate financial products through a single platform and API, positioning itself as AI-native financial infrastructure.