In the modern B2B landscape, having an API program is crucial for companies, whether APIs serve as the core product or enhance integrations and functionality. The development of reliable Software Development Kits (SDKs) is essential to ensure high performance and scalability, as poor design can undermine customer infrastructure and trust. Moesif, an API analytics service, emphasizes practices such as secure and asynchronous SDK initialization, scope reduction of API keys, and batching of heavy network traffic to optimize performance. Implementing local queuing enhances reliability by decoupling data capture from processing and prevents resource overload during API downtimes. Proper queue flushing, using both time-based and count-based triggers, combined with payload compression, further reduces latency and data size. Including the SDK name and version in the User-Agent header aids in tracking adoption and identifying version-specific issues. Effective API analytics and thorough documentation via changelogs are pivotal for monitoring performance, identifying areas for improvement, and aiding users during migrations. Moesif offers tools and strategies to support API observability and cost management, underscoring the importance of comprehensive analytics and documentation in the successful deployment and operation of APIs and SDKs.