Keyword research is the most indispensable part of any SEO campaign and forms the basis of either its success or failure (if not done correctly). Ask any SEO professional what the single most important part of an SEO campaign is and we bet youll get this answer: Keyword choice! Heres why The keywords you choose will be the focus of your entire optimization process. Keywords (also referred to as keyword phrases, keyphrases, keyterms, and just terms) are the short, descriptive phrases that you want to be found with on the search engines.