Let's say you are reading a newspaper that contains articles written by journalists. There are ad banners between the text and photos. Articles are created by journalists, and banners are made by advertisers. The wider the newspaper's audience, the more advertisers it will attract.
But that's how things used to be. And how is it now? On the site, you see articles and advertisements created by the site owner. The same subject both publishes content and provides advertising.
The site owner creates a platform for publication, attracts the audience, and then advertises his goods and services.
Based on this principle, the world's largest companies have made blogs. Now
Coca-Cola doesn't just sell soda,
Walmart doesn't just sell goods,
Red Bull doesn't just sell energy drinks. Companies show more and create new formats of interaction with the audience, gain trust with the help of their media projects in different countries.
Doing content marketing, they attract attention to a certain segment of the market and attract the appropriate audience.
You don't have to be Coca-Cola to run your blog. Blogs are appearing more and more.
It is not even necessary to have your website for writing articles. This can be done on side thematic or blog sites (for example, Medium). Or even just social networks.