A smart speaker is a voice-activated device that connects to the internet and can perform various tasks through voice commands. It typically features built-in virtual assistants like Amazon Alexa, Google Assistant, or Apple Siri, allowing users to play music, set reminders, control smart home devices, and access information hands-free. These devices often come with speakers that provide high-quality audio for music playback and can also answer questions or provide updates on weather and news. Smart speakers can integrate with other smart devices, creating a connected home environment that enhances convenience and accessibility for users.