Customizing and extending

One of the most exciting aspects of working with Drupal is the fact that you can extend and customize the system to your own requirements. You can either create your own custom modules or there are hundreds of free add-on modules on the drupal.org website. So if you want to have a shipping calculation that works with your product set, or you need to get your data from a legacy database in your company, you are not limited by the initial capabilities of the software. As it is open source, you are not locked into using a proprietary vendor to make changes—you can do it yourself!

You can also find a more curated list of Drupal Commerce specific modules at drupalcommerce.org.