Is it possible to organize subdomains of an online store on WordPress or another CMS, referring to product cards from the main domain?

Question

CMS

There is a WordPress online store test.ru , which, for example, sells cornices. There are 10 product categories in this store (let's say indoor cornices, outdoor cornices, cheap cornices, premium cornices, etc.) and 20 products (AA01 cornice, BB02 cornice, BB03 cornice, etc.).
All category pages are made exclusively for SEO promotion and are a listing of products with a footcloth of text. Each product can be included in several categories , i.e. Cornice AA01 can be expensive and outdoor, and Cornice BB02 is cheap and for the home. Such is the simple scheme.
Further, if you check the competitors in the regions, you will notice that the top sites are large sites of broad topics on subdomains with poor content - only one page is devoted to the “cornices” section, on which meta-data is only correctly filled out. From this we can conclude - we make a subdomain on our site region1.test.ru , for each product category we write a footcloth of text using regional keys, and it's done. Then we multiply 100 subdomains and conquer all of Russia!
How to implement it? Make 100 copies of the site on 100 subdomains by hand or using the WordPress Multisite plugin? Then you need to uniqueize not only the landing sections of the categories, but also each of the product cards? It turns out that region1.test.ru and region2.test.ruare they different resources? What if a customer from the first region buys a product and then decides to leave a positive rating? He will simply go to the site test.ru and write a review there, which, in turn, will not appear on other subdomains. Can make subdomain pages synchronous? Then the content will not be unique for search engines - 100 pages on different subdomains with the same topic reviews. One gets the impression that there are more questions than answers.
Before asking a question, I googled. In this topic How to deploy subdomains for regions through multisite on wordpress and woocommerce?the answer is given that all efforts are meaningless and will kill SEO. The author of the answer suggests "doing the implementation not on subdomains, but on sections." Can you imagine if you take 100 city sections within one site and make 10 subsections with a product category for each section? 1000 landing pages for 20 curtain rods? It is unlikely that such a site will be highly rated by search engines.
Here's another example. Take the first site that came across drom.ru - a bunch of subdomains, from regional to menu items. All subdomains are connected into one structure, the user feels himself on a single resource. An advertisement for the sale of the same Mercedes in Moscow can be found in the Moscow section ( moscow.drom.ru ), as well as in the St. Petersburg + 1000km sections ( spb.drom.ru ) and in the Mercedes brand section (mercedes-benz.drom.ru ). For a second, drom.ru is in first place in the issuance of my region.
In my opinion, it would be logical to make the product matrix of my online store, articles , shopping cart and other pages only on the main domain , and pages with categories (listings leading to products on the main domain) on regional subdomains under regional keys. Example: a person in Barnaul is looking for expensive cornices -> enters "Buy an expensive cornice" -> follows the regional link barnaul.test.ru/dorogie-karnizi -> clicks on the product he likes -> goes to the main site test.ru/dorogie-karnizi /product-aa01.
Question. Is this organization of pages and domains suitable for successful regional SEO promotion? Is it possible to implement such an online store structure on WordPress? If not, please recommend a CMS with such functionality. Thanks in advance!

Answer 1

It is possible that it will do, but I advise you to carefully read the Yandex FAQ (for example) on this issue - there is a non-zero possibility not to observe the subtleties and get banned by a search robot.
IMHO, for such a system it is better to take not WP, because. There can be a lot of crutch-bicycle solutions. You can try to make sites with one base, and for subdomains using child themes to do this magic. But again, the best, in my opinion, solution would be something like Bitrix or ModX, or write an individual system.

Answer 2

It's funny, a client recently asked me to do a very similar thing on his online store of construction products, each section of the Catalog will have its own subdomain. For now, we are thinking in the direction of dynamic subdomains with query processing on the WordPress side and the issuance of the necessary content with the condition that content is not duplicated at different URLs.
SEO-shniks of the client shout at the top of their lungs that this topic is not new and there will be no bans for it)
Well, well, let's check)) The master-master ..