I would like to know if it's really necessary for every single web page of a website to be SEO optimized?
I mean do many SEO optimized pages boost my ranking in general? Or can I concentrate on the most relevant pages for Google search and forget about pages like impressum or product overviews. Because I don't believe my customers would want to get a product overview in Google search as a result instead of the product page itself. But maybe Google and bing think otherwise.
I appreciate every help, especially with a reference source.