SEO marketing is a subset of digital marketing that involves the optimization of websites and web pages for major search engines like Google, Microsoft Bing, etc...
SEO is an essential marketing technique that is focused on bringing organic, non-paid traffic to your website by using high quality content to get to the top of a search engine results page. This can include:
Advertising delivered through digital channels to promote brands and connect potential customers using the internet and other forms of digital communication.