Search engine optimization is the process of optimizing web pages and their content to be easily discoverable by users searching for terms relevant to your website. The term SEO also describes the process of making web pages easier for search engine indexing software, known as "crawlers," to find, scan, and index your site.
To understand the true meaning of SEO, let's break that definition down and look at the parts:
You can attract all the visitors in the world, but if they're coming to your site because Google tells them you're a resource for Apple computers when really you're a farmer selling apples, that is not quality traffic. Instead you want to attract visitors who are genuinely interested in products that you offer.
Once you have the right people clicking through from those search engine results pages (SERPs), more traffic is better.
Ads make up a significant portion of many SERPs. Organic traffic is any traffic that you don't have to pay for.
Perhaps the most important aspect of search engine optimization is how you can actually leverage SEO to help drive more relevant traffic, leads, and sales for your business. Billions of searches are conducted online every single day. This means an immense amount of specific, high-intent traffic.
Think you are a librarian of the world’s biggest library. People depend on you to find the exact book they need, so how you suggest them the right book. for that, you need the system, that tells you which book has the right information related to their queries and which book are related to each other, so need the system which stores lots of information.
Search engines like Google and Bing are librarians who have lots of information related to every question. They collect every information on every web page so they can help people to find the correct information that they want, for that, they have some algorithm to catch every important key thing to find that information, and for that key thing, we can call SEO (search engine optimization)
When someone searches some query on the search engine that time Google spider find the key point (SEO) on every page to provide the right information and after that, they show correct information on the search result.