What is semantic markup for web pages?
Semantic markup is the concept of using HTML or other markup languages to clearly define the relationships between the sections of content or other elements within the web page and to define the relationships between the content on that web page and other web pages or other web sites.
Semantic markup insures that the structure of your document or web page is clearly and correctly delivered to the web browser and to search engines.
Using semantic markup to develop your web site will help your web site be properly indexed by search engines, generating better traffic. It will also insure that visitors using older browsers, or browsers with limited support, can read and understand your web pages. The use of semantic markup also greatly helps visitors with disabilities, particularly blind users using a web reader, to interact with your pages effectively and efficiently.
For most businesses, the SEO impact of proper semantic markup represents the greatest benefit.