Why we recommend migrating from Drupal 7 to Drupal 9
Migrating from Drupal 7 to Drupal 8/9
Drupal 7 was released in 2011, and since then it has been updated with security patches. But now the time has come to move on from this version of Drupal. Drupal 7 & 8 both reached end-of-life in Nov, 2021.