Although they aren’t the BIGGEST factor in SEO, keywords are still very important and useful today in 2021. The reason for this is is that SEO is more complex than just putting your keywords on a page. You will always have to change how you are using keywords due to the ever changing algorithms happening with search engines.
Keywords are a great tool to help indexers and search engines relevant pages on the web. If search engines can use them to find your content, then so will potential business clients.
This is why learning how to do quality SEO keyword research and analysis is incredibly value for your business.
Mark Traphagen has a column on Search Engine Journal where he shows us the basics of good keyword research and analysis.