Drupal Core

This term refers to the core of Drupal that contains the essential features. With Drupal 8, each version (8.x) has new features. As the API is compatible from one version to another, it becomes possible to upgrade and benefit from these improvements quickly.

The Drupal core needs to be updated regularly to avoid security breaches. For this, we must follow the "Security advisories" on drupal.org/security

See the preventive security plan for drupal