Which of the SEO tactics are more important to focus on when building a website?

[ferriesthai]

Which of the SEO tactics are more important to focus on when building a website?

[WoodsPainting]

Make your website faster. ...
Secure your site with HTTPS. ...
Optimize the mobile version of your site. ...
Improve traffic and engagement metrics. ...
Focus on the user experience of your website. ...
Create engaging and valuable content. ...
Strengthen your social media presence. ...
Use long tail keywords in your SEO strategy.

[ImpalaWardrobes]

Improve user experience across your entire site.
Optimize for voice search.
Focus on topic clusters instead of keywords.
Go into detail – but only when it's relevant.
Conquer video with YouTube SEO.
Build a variety of backlinks.
Get a grip over technical optimization.