Search engine optimization (SEO) is the technique of directing prospective clients to your website via organic search engine results.
SEO is all about inbound marketing (not paid advertising) that drives traffic to your website. Begin with a solid content strategy. The higher your site will rank, the more high-quality material you provide and the more natural links you may develop to it.
A good SEO strategy may bring in thousands of inbound traffic leads per month.
The more qualified your target keywords are, the more high-quality leads will visit your website.
While Google is usually the first search engine that springs to mind, it is not the only one. Users also frequently use Bing and DuckDuckGo as search engines.
In most situations, optimising for search involves optimising based on Google's algorithms, as well as webmaster guidelines and industry-recognized best practises designed with the search engine king in mind. Nonetheless, some SEOs, particularly those optimising for local search (as discussed below), keep Bing in mind in their efforts.
Keep in mind that many businesses utilise Google Ads, which display before organic results on the SERPs, so ranking on Google seldom implies reaching the top of the page.
So, search Engine Optimization (SEO) is the practise of increasing the amount of visits to a website by convincing search engines to rank your website pages towards the top of organic search engine results pages.