Search engine optimization (SEO) is the practice of increasing the quantity and quality of traffic to your website through organic search engine results.
The better a web page's search engine optimization, the higher a ranking it will achieve in search result listings. (Note that SEO is not the only factor that determines search engine page ranks.) This is especially critical because most people who use search engines only look at the first page or two of the search results, so for a page to get high traffic from a search engine, it has to be listed on those first two pages, and the higher the rank, the closer a page is to the number one listing, the better. And whatever your web page's rank is, you want your website to be listed before your competitor's websites if your business is selling products or services over the internet.
In today’s competitive market, SEO marketing is more important than ever. Search engines serve millions of users per day looking for answers to their questions or for solutions to their problems.
SEO is important for the smooth running of a big web site. Web sites with more than one author can benefit from SEO in a direct and indirect way. Their direct benefit is increase in search engine traffic and their indirect benefit is having a common framework (checklists) to use before publishing content on the site.
Quality of traffic. 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.
Quantity of traffic. Once you have the right people clicking through from those search engine results pages (SERPs), more traffic is better.
Stands for "Search Engine Optimization." Just about every Webmaster wants his or her site to appear in the top listings of all the major search engines. Say, for example, that Bob runs an online soccer store. He wants his site to show up in the top few listings when someone searches for "soccer shoes." Then he gets more leads from search engines, which means more traffic, more sales, and more revenue. The problem is that there are thousands of other soccer sites, whose Webmasters are hoping for the same thing. That's where search engine optimization, or SEO, comes in.