Synthesia is an AI video communications platform that allows users to create personalized and professional-looking videos without the need for mics, cameras, actors, or studios. It utilizes advanced AI technology to generate lifelike digital avatars and cloned voices in multiple languages, enabling scalable and affordable video content creation. People might want to use Synthesia for a variety of purposes, including learning and development, sales enablement, marketing, customer service, and business operations, due to its ability to produce high-quality videos quickly and efficiently, potentially reducing production costs and time.