2023 was the year of AI. OpenAI's ChatGPT took the world by storm and shares of AI chipmaker Nvidia (NVDA) soared. So how should investors play the sector in 2024? Evercore ISI Head of Internet Research Mark Mahaney and Piper Sandler Equity Research Analyst Brent Bracelin give Yahoo Finance Live their best ideas. Mahaney likes Amazon (AMZN), Alphabet (GOOG, GOOGL), and Meta Platforms (META). Why? "They've got so much data to work with and they also have the capital to be able to invest," Mahaney explains, adding that these companies were investing in AI long before 2023.  Bracelin is favoring Microsoft (MSFT) saying this is Microsoft's "iPhone moment." Bracelin also likes Adobe (ADBE) and HubSpot (HUBS) for how they plan to monetize their AI products.  Watch the video above to find out why Bracelin also thinks database stocks could be a "dark horse." For more expert insight and the latest market action, click here to watch this full episode of Yahoo Finance Live...