Alexa is a virtual assistant developed by Amazon. It can help you with various tasks, such as playing music, setting alarms, and providing weather updates. You can interact with Alexa using voice commands, making it easy to get information or control smart home devices without needing to use your hands. Alexa is built into devices like the Amazon Echo and can also be found in other smart gadgets. It learns from your preferences over time, becoming more personalized in its responses. With thousands of skills available, Alexa can assist with everything from cooking recipes to playing games, making it a versatile companion in your daily life.