Feeds and Drupal Commerce 2 / Drupal 9
Category
Feeds is such a great module. You can mass update all elements of your nodes, products, taxonomies, users, etc. It works by importing a source data file, where you carefully input all the fields you want to import for example with a CSV file.

Drupal was again the best and correct choice for a new site. I had to build a new site, this time ecommerce site and I did not know what to pick, I thought Magento would do the trick, but it is rigid and not so much flexible.