Merge's Unified API streamlines the integration of multiple CRM systems by offering a standardized interface that reduces development effort and maintenance overhead. By linking CRM tools like Pipedrive with Merge, developers can automate tasks such as creating deals, which enhances efficiency and scalability across platforms. The article demonstrates the process of using Merge's API to automate deal creation in Pipedrive through a Python SDK, highlighting the ease of managing integrations without dealing with the complexities of individual APIs. This approach allows organizations to integrate CRM systems with other applications seamlessly, saving time and improving operational efficiency.