The YouTube algorithm is a sophisticated system that determines which videos to promote based on user behavior, trending topics, and viewer preferences, ultimately aiming to keep users engaged on the platform. Over the years, it has evolved to consider factors like watch time, user satisfaction, and performance metrics, significantly impacting how videos are recommended. To optimize their videos for better visibility, creators should focus on metadata, engaging content, and consistent uploading, while also understanding that the algorithm adapts to viewer interactions and preferences.