Fern has launched a groundbreaking SDK that integrates both gRPC and REST capabilities, aimed at enhancing developer experiences by providing a unified interface for leveraging both technologies. The SDK was developed in collaboration with Pinecone to create a robust C# SDK that supports .NET developers, now part of Microsoft’s Semantic Kernel. While Fern initially focused on REST SDKs, they recognized the need for performance-sensitive solutions, hence the inclusion of gRPC, a technology widely used by major companies like Uber and Netflix. Pinecone’s SDK is structured to manage the control plane with REST and the data plane with gRPC, addressing performance demands while maintaining simplicity and readability through Fern’s tools. This integration allows for seamless API updates and automatic SDK generation, streamlining the process of incorporating new functionalities. Fern's SDK aims to overcome the complexities associated with gRPC's implementation, providing idiomatic, user-friendly libraries that bridge the gap between REST compatibility and gRPC performance, thus offering a comprehensive solution for developers across various platforms.