80 KitKat websites switched to @Drupal and @Acquia in less than 18 months. The result: a massive 1,000% boost in traffic, a 50% drop in bounce rate, and 3 times the pageviews compared to their old sites. More details here: 

KitKat gets a break with Drupal and Acquia
How KitKat's websites, revamped with Drupal and Acquia DXP, resulted in a 1,000% increase in traffic.
