Music sync licensing (short for synchronization licensing) is the process where your music is licensed to be used in visual media—like TV shows, movies, ads, or games. It means your music is "synced" with a visual element.
This opens the door to many music sync licensing opportunities not just on Netflix, but also on platforms like Amazon Prime, HBO, Disney+, and more. https://www.tumblr.com/onenightstand21/790591725676773377/how-to-submit-music-to-netflix-and-movies-as-an