20 years ago, when the Internet was not yet widespread, there were only text and images. In fact, even 5 years ago most content on the websites consisted of text and images only exclusively, with some very low quality video and audio on rare site.
A lot has changed in the past 5 years. Youtube was born and it took the online experience to a whole new level. The videos have become widespread and now not a day passes by when you don’t see a video somewhere online.
Same goes with audio. While it has become popular earlier than videos due to lower bandwidth requirements, it has also boomed.
What does that mean in the context of link building? Now you can take advantage of these two formats of content to get even more links.
Submitting videos, audios, podcasts and so on gives you more links than just text articles.

