Everyone wants a piece of the artificial intelligence (AI) market. Since OpenAI made a significant breakthrough with the launch of ChatGPT, the industry has attracted considerable attention from corporations. None has benefited from it more than Nvidia, and although the chipmaker is an excellent investment, my favorite AI stock to buy and hold is Amazon (AMZN -2.55%). AI and so much moreOne reason Amazon is an attractive stock is that its business is significantly diversified beyond AI. That can allow the c ...