Drupal is a content management system (CMS) that is regularly updated and maintained by the Drupal community. When a new version of Drupal is released, the previous version is no longer actively developed or supported. This means that new features and functionality are not added to the previous version, and security vulnerabilities are not fixed.

The end-of-life (EOL) support for each version of Drupal is determined by the Drupal community. When a version of Drupal reaches its EOL, it is no longer recommended for use and users are encouraged to upgrade to the latest version.

Here is a summary of the EOL support for different versions of Drupal:

• Drupal 9: EOL support is currently ongoing and is expected to continue until at least November 2023.

• Drupal 8: EOL support ended in November 2021. This means that Drupal 8 is no longer actively developed or supported, and users are encouraged to upgrade to Drupal 9.

• Drupal 7: EOL support ended in November 2021. This means that Drupal 7 is no longer actively developed or supported, and users are encouraged to upgrade to Drupal 9.

It is important to keep your Drupal installation up-to-date to ensure that you have access to the latest features and security fixes. If you are using an older version of Drupal that has reached its EOL, you should consider upgrading to the latest version to ensure that your site is secure and well-maintained.