SEO or search engine optimization is a tested and proven, effective digital marketing strategy. In digital marketing, good SEO makes sure all your content reaches your target audience. SEO provides your sites and content organic traffic, which is free as opposed to paid ads. All major search engines such as Google, Yahoo! and Bing rank your site and content including videos, according to their search engine guidelines, favoring those that are most relevant to the users. SEO services make sure you follow these guidelines and increase your site rankings for it to show as a top result once a customer initiates a search.