: Do SEO activities on a certain webpage affect the whole domain or just that one page? I recently read an SEO blog post where the author was giving examples of how to improve the SEO of an

@Si4351233

According to moz, each website having two kind of authority. One is Page authority and other is domain authority. So if blog.example.com got a few backlinks, that will help the page to gain more authority also will improve domain authority.

When a website having a good Domain authority, all of it's pages likely to get better search ranking. So in that way, blog.example.com will help to gain domain level authority and which will helps any page from that domain to rank well on search result page.

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@Cugini213

Subdomains are not considered in the website SEO scoring the same as subfolders are considered - they are treated as separate but related properties with a separate score/rank etc.

Therefore, having a blog at blog.example.com will definately influence the overall SEO/page ranks of your website at example.com, but not as much as if it were at example.com/blog. Links to and from subdomains from your main website would be treated as internal site links because the sites are so obviously related.

I would suggest this really is a duplicate question though - have you read:


How does Google regard subdomains with regard to SEO?
Do subdomains help/hurt SEO?

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