Viewer engagement refers to the level of interaction and involvement that an audience has with content, such as videos, articles, or social media posts. It can be measured through various metrics, including likes, shares, comments, and time spent viewing. High viewer engagement indicates that the content resonates with the audience, encouraging them to participate actively. Effective viewer engagement strategies often include creating relatable content, asking questions, and encouraging feedback. Platforms like YouTube and Instagram provide tools for creators to foster engagement, such as polls and live chats. Engaged viewers are more likely to become loyal followers and advocates for the content.