One of the most valuable traffic sources on your channel are the end screens. They often lead to much more watch time per viewer than any other traffic source on your channel. Just look at the “average view duration” in your YouTube analytics. One of the best ways to grow your YouTube channel very quickly is to work on increasing the amount of watch time you get on each video by increasing the audience retention. Then, once you’re getting viewers to your end screen, you can optimize it in a few ways that will lead to the most number of clicks, thus getting more watch time on even more videos and growing your channel overall.