To explore the best tactics for writing YouTube descriptions, I spoke with Eric Peters, a Senior Growth Marketing Manager on HubSpot's Academy team. He told me, "[YouTube descriptions] is one of the primary ways YouTube knows what your video is about. Include links, additional resources, links to other videos and playlists, etc. Make sure the description box is easy to read."

As Peters notes, explaining your YouTube video and incorporating keywords into your description doesn't just help with SEO rankings -- it also helps with accessibility for people who are deaf and hard of hearing. For that reason, adding closed captions to your videos is an absolute must, too.

For instance, take a look at one of HubSpot Academy's YouTube video descriptions: