QUOTE(barneyjustice @ Sep 6 2013, 11:33 AM)
Digital marketing is of a much more bigger horizon and involves all the techniques that includes marketing through the digital medium. SEO on the other hand could be considered as part of it.
Marketing for a product or solution on the digital platform is digital marketing or internet marketing or online marketing. SEO is one of the 7 tactics of digital marketing. But not to forget that the off page optimization, part seo process also involves social media linkings and others. That's why it is rightly said,"Seo is one of the most important tactic of digital marketing.