Merge's unified API offers a comprehensive solution for integrating B2B financial products with over 50 integrations across commerce, accounting, ads, and payments to streamline financial processes such as expense management and invoice processing. It provides a range of features including integration observability tools, advanced syncing capabilities, and extensive integration coverage across CRM, HRIS, ATS, and more. Merge is positioned as a superior choice for those needing synchronous POST requests, transaction syncing through a single endpoint, and leveraging well-established integrations, especially when compared to competitors like Rutter. The article also highlights other platforms like Apideck, Workato, API2Cart, and Zapier as alternatives, each offering unique features and advantages for specific use cases, such as building integration-related web pages quickly, leveraging AI for faster integration building, supporting a wide range of ecommerce integrations, and enabling easy-to-use workflows for non-technical staff.