Keyword research is an important part of any website’s search engine optimization and an important search engine optimization (SEO) tool. It helps to drive web traffic to your website, especially those pages with highly searched keywords. Also, providing content relevant, unique, fresh, and extremely useful to the reader’s increases the success of any keywords. Content and keywords always help each other from the SEO perspective. Keyword research also will help in optimizing the web page and get it in the top search engine results page.
A nice infographic from Promodo
that shows the keyword research process.