I was in the internet marketing game a long time ago, around 2003-2011 or so.
I mostly sold my own software products, had a few different brands, some targeted to consumers and others to businesses.
When marketing those products I used SEO as well as PPC (mostly Google).
I also played around with AdSense and did some affiliate marketing stuff as well.
In 2011 I sold my remaining products to another company.
I've just tinkered around with a few projects here and there since, but…