I have a product's page on a subdomain:
It is very well positioned and linked in many websites on the topic.
I'm planning to create a new landing page for a sub-product of that same product.
Should I do it in a subfolder or in the root ?
Is there any difference in terms of SEO? Does the "page rank" of my main product's page will help to position the new subproduct page if I use a sub directory instead of taking it out from it in the URL?