I usually take an SQL dump from production, and install it as an additional database on the same server as the destination
On your Drupal 8 site, you should already have completed the creation of the new content types, based on information you discovered and documented in your first steps. This should also encompass the creation of taxonomy vocabularies, and any fields on your user entities.
In your Drupal 8 settings.php file, add a second database config array pointed at the Drupal 7 source database.
- migrate_drupal, migrate_plus (gère les migration groups), and migrate_tools (lié à drush)
We start with a new, custom module.