Building product integrations between a platform and its customers' applications is essential for business benefits such as customer retention and market expansion, but deciding whether to build or buy these integrations involves weighing various pros and cons. Building integrations in-house allows for customization and full control over issues, but it demands significant time from engineers and can lower morale due to continuous maintenance. Conversely, buying integrations from third-party platforms can save engineering time and offer comprehensive, out-of-the-box solutions, though it might be costly and limited in scope. Merge, a leading unified API solution, simplifies this decision by allowing a single integration build to access hundreds of integrations, providing observability features, integration maintenance support, and advanced features like Field Mapping for custom data synchronization.