CUDA (Compute Unified Device Architecture) is a closed-source low-level API that interfaces software with NVIDIA GPUs. CUDA is a major moat for NVIDIA. It’s part of why NVIDIA GPUs command such a premium over other hardware (and are perpetually in short supply). A few reasons why the monopoly exists: * Hardware/software synergy. NVIDIA has consistently shipped the fastest hardware) and software. It’s been difficult for other companies to build this flywheel (software companies don’t have the