Amazon CEO Andy Jassy introduced 'Nova,' a new set of AI foundation models at AWS re:Invent.The Nova models aim to establish Amazon's presence in the generative AI revolution.The Nova family includes multiple primary models like Nova Micro, Nova Lite, Nova Pro, Nova Premier, Nova Canva, and Nova Reel.Amazon plans to expand the Nova initiative with speech-to-speech and 'any to any' models in the future.