https://wccftech.com/vulkan-ray-tracing-final-spec-released-by-khronos-group/

Following the provisional spec released earlier this year, the Khronos Group has now formalized the final spec for Vulkan Ray Tracing, after months of feedback from hardware and software vendors throughout the entire industry.

Originally built on the VKRay set of extensions developed by NVIDIA, Vulkan Ray Tracing is now the first open-source cross-platform (and vendor) standard for ray tracing in the industry. It allows developers to either use GPU compute or dedicated ray tracing cores where available.