Regardless of the version of Drupal it's based on, Acquia Drupal contains a group of Core modules that can be enabled or disabled, but not uninstalled. These modules provide the base level of functionality for your website, including the areas of content creation, display, and website administration.
Acquia Network Connector
Acquia Drupal contains the Acquia Network Connector, which you can use to connect your website to the Acquia Network. For more information about the Acquia Network Connector and what it can do for your website, see Acquia Network.
The following modules (based on the Drupal version) are included in the Acquia Drupal download, along with the Core modules: