I think there is no differences about it,however SEO is one of the common strategies on doing internet marketing and i think that is the difference about it.
SEO is a part of internet marketing because all the seo work are doing by internet help and main part of seo is market a product or website online. so internet is a medium in between marketing.
SEO is the an internet marking business that is the increase your internet marking also increase your sales.
SEO is search engine optimization, if you do well on it, it will bring a lot of traffic for your site, SEO is an art technique and need to keep doing it day after day, you should optimize your site.......
