Linking from & to in domains and sub-domains

[vtmoz]

What's the best optimised linking between sub-domains and domains? And every time we'll give website link at top with logo...do we need to link sub-domain also with all it's pages?

If example.com is domain and example.com/blog is sub-domain or sub-folder...

1. Do we need to link to example.com from /blog?

2. Do we need to give /blog link in all pages of /blog?

3. Is there any difference in connecting domains with sub-domains and sub-folders?

[TheSymmetran]

np, you don't want to assume things.

this is what Matt Cutts said in 2012: https://www.youtube.com/watch?v=_MswMYk05tk

It is still advisable that most websites out there rather rely on pages and subdirectories for regular pages and content than subdomains, but nowadays it is a highly subjective thing, basically suit yourself on it.

But keep in mind the simple formula for decision making: Pros v Cons... which outweighs which and why.

subdomains can certainly cause you, the owner and web dev, more work and impose a higher "moving parts" risk under most typical circumstances where /page is a viable alternative.

also look at these

https://moz.com/community/q/link-juice-from-subdomain

https://moz.com/community/q/getting-mixed-signals-regarding-how-google-treats-subdomains

[vtmoz]

Thanks for the response.

We have 6 sub-domains like blog, etc. Our blog is a sub-domain but configured as example.com/blog (wordpress). Others are left as same. sub-domain.com, etc. We have thousands of visits on these sub-domains with hundreds and thousands of pages. So, we are not sure whether these will be treated as individual websites by Google or all together as same website. If they treat as individual website, will there be any link juice passing from and to domain and sub-domains? And my doubt is, what's the best way to link these sub-domains from our domain. I have gone through some posts saying too many links from sub-domain to domain may turn as spam for Google.

[TheSymmetran]

You really need to understand these terms correctly

sub.domain.com < this is a subdomain

domain.com/page < this is a page and it could also be a folder of your site depending on your config

The answer to your question depends on the need here. Why are you needing subdomains? for multi-lingual site? e.g. us.xyz.com or FR.xyz.com? or just for something like a shop or blog and you are having a debate between making them into a page or a subdomain?

I recommend you spend more time studying what you are attempting to accomplish here. Subdomains should be avoided unless absolutely necessary, each subdomain is treated separately for ranking purposes than pages on the top domain

so domain.com will be treated as one site by google and sub.domain.com will be a whole nother page receiving next to no authority or juice or anything from the main domain short of your internal links. I would roll with a page wherever applicable and possible instead of a subdomain.