Kokkos is transforming how high-performance applications run on National Supercomputing Mission (NSM) systems. With NSM deploying a mix of CPUs, GPUs, and other accelerators, ensuring software runs efficiently across all these platforms can be challenging. Kokkos simplifies this by providing a single, flexible programming model that adapts to different hardware without requiring major code changes. It supports multiple backends like CUDA, HIP, SYCL, and OpenMP, making it easier for developers to write performance-portable applications. For NSM’s large-scale supercomputers, Kokkos ensures better performance and scalability, allowing applications to make full use of processors, GPUs, and memory hierarchies. It also optimizes energy efficiency by improving memory access and reducing unnecessary data movement, helping to make supercomputing more sustainable. Since Kokkos is open-source and backed by an active community, it keeps up with emerging technologies, ensuring seamless adoption of next-generation NSM systems and preparing them for the future of exascale computing.