Best SEO tools of 2021: free and paid search engine optimization services

At its heart, SEO (Search Engine Optimization) developed as an extension to web accessibility by…

At its heart, SEO (Search Engine Optimization) developed as an extension to web accessibility by following HTML 4 guidelines, in order to better identify the purpose and content of a document. 

This meant ensuring that web pages had unique page titles that properly reflected their content, as well as keyword headings to be better highlight the content of individual pages, and that other tags were treated the same accordingly.