Outro is the ending of your video, somewhat similar to "goodbye," but not quite. Imagine you're watching a great movie, and at the end, the credits roll. In YouTube or TikTok videos, the outro plays a similar role. It's the part where you can say "thank you for watching," ask viewers to subscribe to the channel, or hit the bell to not miss new videos.
Why is this important? Because the outro helps keep viewers engaged. If a person listens to the outro, it increases the chances that they will subscribe to the channel or watch other videos. It's like at a meeting: you don't just get up and leave, you say goodbye, maybe even arrange the next meeting. The outro works in a similar way.
For example, if you have a cooking channel, in the outro you might say: "Check out our other recipes, and if something turned out delicious — let us know in the comments!" This motivates people to stay with you. So, the outro is not just an opportunity to say goodbye, but also a chance to continue the conversation.