The document discusses several key technologies related to artificial intelligence and the metaverse, including infrastructure technologies like 5G, cloud computing, and GPUs; human interfaces like mobile devices, smartwatches, and VR headsets; decentralized technologies like edge computing, blockchain, and microservices; spatial computing techniques like 3D engines, VR, AR, and mapping; and applications in areas like gaming, social media, e-commerce, and more. It also briefly mentions uses of machine vision, natural language processing, speech recognition, and blockchain-based IoT in helping enable the metaverse.