Over the past 20 years, the internet space has changed the way consumers buy. The fact that you can buy things online very easily, has made it very convenient for people to buy things online and revolutionized the way marketing is done. Having the best products is no longer enough, your site needs to be found on top when people are searching for what you have to offer.
A search on any search engine for a well known keyword yields thousands, if not hundreds of thousands of results. In such a situation, how a website gets itself among the topmost results of a query for a particular keyword is known as Search Engine Optimization or SEO. Finding a place within the top results on related and important searches increases the number of people who are drawn to your website and hence you do more business. That is the reason why SEO has become so important.