One hundred HOURS of video are uploaded to YouTube every MINUTE. This means that there’s huge competition for attention. You need to do everything you can to ensure that your videos get found. Your videos’ meta data will help. “Meta data” is data which gives information about your videos. In its Creator Playbook, YouTube tells you how to create your meta data:

YouTube is the world’s second-largest search engine, and it uses metadata – your video’s title, tags and description – to index your video correctly. To maximize your presence in search, promotion, suggested videos and ad-serving, make sure your metadata is well optimized.

Optimizing your videos for search makes the difference between success and failure, so be sure to do it.