SEO can be defined as a...

SEO is a set of strategies you can use to help your web page rank better on Google’s organic searches. They can be divided into two categories: on-page strategies (user-friendliness, keywords, authoritativeness, etc.) and off-page strategies (reputation building, backlinks, etc.). For further information on how to use these strategies, check Google’s "Search Engine Optimization (SEO) Starter Guide".