fab1987a

I followed your advice and installed a multi-site. It worked fine using a sub-domain as main site, and sub-directories as sub-sites.

I was able to obtain this:

main site: country.domain.com
sub-site 1: country.domain.com/service1/
sub-site 2: country-domain.com/service2/

Adding multi-language support with WPML, I end-up with this structure:

germany.domain.com/service1/en/….
germany.domain.com/service1/ge/….

Whereas any other URL coming from the main site would be:

germany.domain.com/en/subfolder/…

It is a bit messy, but I guess there is not solution for that.

Also, would you suggest using a multi-network instead?

It seems a better option than using domain mapping. However, I only found this article talking about it:

https://premium.wpmudev.org/blog/wordpress-multi-network/

And the plugin is very outdated. Does it still work?

Okay, I will install multisite and play with domain mapping to figure it out myself.

Besides technicalities, do you think this is the best URL strategy to adopt in my case?

country.domain.com/en/servie

Or you would structure it differently? How could I make if more user-friendly?

Thank you for your response @jnashhawkins .

For what I know (not much yet), domain mapping is used when you want to link each website to a completely different domain. Would it work with subdomains too?

Can you give me some tips on how to start and what I should study?

Thanks again!