Merge, a company focused on providing a unified API for simplifying complex systems, has raised $55 million in a Series B funding round led by Accel, bringing its total funding to approximately $74.5 million since its inception in June 2020. The company aims to streamline the integration process for its over 3,000 customers, which include notable firms like AngelList and TripActions, by offering tools that speed up product roadmaps and reduce engineering costs. Merge's success is attributed to a strong company culture and a customer-centric approach, with plans to use the new funding to expand its team and enhance its product offerings. The company envisions becoming the integration layer for all B2B companies, emphasizing continuous improvement and customer experience as key to achieving this goal.