Keyword research is part of the foundation to a great SEO campaign. Each SEO Company does their keyword research a bit differently but if they don’t do it well then you won’t attract new clients or customers. Our company handles keyword research a bit differently and we don’t share all of our secrets but we can tell you we don’t do the typical research we go a deeper and we make sure the clients landing on your website is actually looking to buy your service or interact with your company.
If you wan to learn more about keyword research here is an in depth guide but still they left some of the secret sauce out. This guide will however help you understand part of the process and why it is so important to do proper keyword research.
https://searchenginewatch.com/2016/10/31/complete-guide-to-keyword-research-for-seo/