We watch a video and sometimes we see that this got viral. Why and it's got viral. If this question knocked in your mind then this article is for you.
For learning how a video gets viral and got over 4M (4 millions views) or millions of views on the internet, we need to learn about what is SEO.

SEO

Search Engine Optimization
SEO means Search Engine Optimization and is the process used to optimize a website's technical configuration, content relevance and link popularity. So it's pages can become easily findable, more relevant and popular towards user search queries, and as a consequence, search engines rank them better.
There are several reason to get a video viral.
1. Most watch time
2. Most like
3. Some shares
4. Comments
5. Reviews
6. Trends
What does viral video means?

If a video video gets or crossed over 1 million views then it's called viral. It's different that if you are a subscriber of MrBeast. Because his all videos on his channel gets over 40M views. Because he has 96M subs. I am also his fan. In his case, we can say that his hole channel is on trend, viral. 

Now, let's learn why a video gets viral...and how?

if not one or ten but over 50% of his viewers watch the video, means suppose, a video got 200 views and over 90-110 viewers have watched the video more than average time means more than half of the video length and it's going like that then the video will be started recommended to some number of people and then if it's performance goes like that this it will be viral.(If you don't delete it😉)

Now, this is the main factor behind a video  gets viral. And other reason that is already given up are work like a side factor. But they are also necessary.

Thank you for watching. 

On the internet smart work is more necessary then hard work