Which Page Markup + Tags Still Matter for SEO?

[Deepak1]

This is a question that gets asked a number of times here. So here's the answer(s) from reputable SEO writers.

[supergolfer]

Which Page Markup + Tags Still Matter for SEO?
     Video Transcription
     Old-school SEO markup
     Modern SEO markup
What’s changed?
   Not as important…
         The H1, H2, and H3
         Strong, bold, and EM
         Added to body

[heenamajeed]

Old fashioned SEO markup Obviously, with URLs agonizing over rel=nofollow and different types of the rel tag, and after that picture source having the alt characteristic. This was somewhat the essential, stripped down crucial essentials.

[amayajace]

Obviously, with URLs worrying about rel=nofollow and other forms of the rel tag, and then image source having the alt attribute.