There are a lot of factors and metrics you can use to determine how much traffic a website gets on regular basis and how popular that site is across the whole world and specific regions. One of the ways is by looking up the Alexa ranking.
And this number is very important, especially for companies that want more exposure or are looking to show social proof if they are planning on selling their website in the near future.
So, if you follow the steps in the video, that will get you more real visitors to your website for cheap, which will in turn, eventually increase your Alexa ranking, however, if you would just rather someone else handle the whole process of naturally boosting your ranking in a very short amount of time, you may want consider a service like this.