The New Relic C SDK has been released to provide production visibility for applications written in C and C++ languages, which are used extensively in software development due to their focus on performance and efficiency. The SDK is designed to instrument C applications, allowing developers to gain insight into performance issues that can result in significant cost savings and deliver a competitive advantage. The release of the C SDK as an open-source project makes it easier for customers to adopt, test, distribute, and deploy it across various platforms. With the C SDK, developers can control exactly what gets instrumented, add custom attributes, and report transaction tracing and other real-time metrics vital to understanding application health and performance.