Amazon is improving Alexa using generative AI to make it more human-like and solve real-life problems in homes.The updated Alexa has a more natural voice and can engage in conversations without needing a wake word.Amazon aims to make Alexa a central smart home hub, competing with AI chatbots like ChatGPT and Google's Bard AI.The rollout of the updated Alexa will begin slowly through a preview program, starting in the US.