Delivering web content today requires broad flexibility to do it well across all possible devices. Drupal offers a terrific platform for managing and delivering that content. Since there are two distinct areas of mobile development, each substantially different on the back-end, this guide distinguishes between mobile web sites and native apps. Each approach is discussed separately, though each builds on the same Drupal infrastructure. Read this paper and learn the best practices, tips, and valuable resources that will help you get your Drupal site mobile-ready and ensure that your content looks good no matter where it ends up.