This document discusses best practices for API integration and common challenges organizations face. It provides the results of a survey of 48 companies which found that most use third-party APIs both to build their core product and accelerate growth. However, maintaining and managing integrations is complex due to issues like unknown API breakages, lack of monitoring, and difficulty managing API keys. The document advocates adopting best practices for integrations early on and having developer, SRE, and security teams work together to address integration challenges.