Is one product in several categories good or bad?

Question

Search Engine Optimization

Hi all. When building a database with products, we noticed that many products are not obvious and it is best to duplicate them. Is this good or bad? If bad, then why? What problems can we face?

Answer 1

The link to the product (including all the information on the page, meta tags, etc.) must be unified and unique for a particular product.
Example: /product/123
You can refer to it from different categories - this is not punishable by PS.
Everything else is just a plus!

Answer 2

The buyer is comfortable. Unless you overdo it with it.
For SEO - there is no need to duplicate the final link to the product, but this link may well shine in many different groups / categories / selections.

Answer 3

Duplicate pages can be
Product can be in different categories of the same product
How to decide?
Using the canonical tag
From duplicate pages, it should lead to the "main" page of this product, from the main one to itself.
It's well covered here