I have to develop an app that talk with Drupal 8 APIs (this is on the production server). Can I install a Drupal 9 local development environment or I must have a Drupal 8 also on local ??
I have to develop an app that talk with Drupal 8 APIs (this is on the production server). Can I install a Drupal 9 local development environment or I must have a Drupal 8 also on local ??
No need for a Drupal 8. You can install it independently.
Yes, but at the same time, it can run on its own as a stand alone.