Nvidia (NVDA 4.11%) has been one of the biggest winners of the artificial intelligence (AI) boom so far. The tech giant designs the world's most powerful chip -- a graphics processing unit (GPU) -- and it's become the star player in the AI buildout. GPUs are used to drive the most critical AI tasks, such as the training and inference of models. The company hasn't stuck to only chips, though. Instead it's constructed an AI empire, offering the products and services customers need to develop and expand infras ...