Merge, a company that provides a unified API for integrating various services, has announced its $15 million Series A funding round led by Addition, which will be used to grow its product, team, and partnerships. The company has experienced significant growth since its seed round, with its user base increasing from 100 to over 600, and has released several new product features, including better logs, enhanced webhooks, and single-tenant offering. Merge has also expanded its team to 20 people and established new partnerships with companies like BambooHR and Lever, aiming to revolutionize how B2B companies approach integrations strategy. The funding round enables the company to continue expanding its integrations with HR APIs, payroll APIs, recruiting APIs, and accounting APIs, and to increase its sales and engineering teams, as well as boost its marketing efforts. With this growth, Merge is poised to become a leading integration platform, managing customer integrations and providing reliable connections with popular HR, payroll, recruiting, and accounting products.