This ultimate guide covers the most important areas of content SEO. Improve your content with Yoast SEO PremiumWhat is content SEO? Read more: Keyword research: the ultimate guide »Why is keyword research so important for SEO content? Copywriting for content SEOThe third and final aspect of a successful content SEO strategy is copywriting. As you’ve learned from this guide, there’s a lot you need to do to keep your site’s content SEO fit.