It refers to the actions that were taken outside of the website to improve its visibility and ranking on search engines. This involves link building, content marketing, social media marketing, and so on. The main goal is to increase the ranking and organic traffic of the website.
If you are interested in learning more about this technology, then I would like you to take this online digital marketing course offered by Intellipaat. This training helps you learn various components of digital marketing and builds your expertise in this field.