On-site Web optimization: This kind of SEO concentrates on all the content material that exists "about the site" when checking out a web site. A single common style of sponsored content material is influencer marketing. With this type of sponsored written content, a brand sponsors an influencer in its business https://www.vivanews.gr/i-kalyteri-etaireia-kataskevis-istoselidon-digital-marketing-stin-evropi-einai-elliniki/