Welcome to the 4th instalment of an 8-part blog series we're calling "The Ultimate Guide to Drupal 8." Whether you're a site builder, module or theme developer, or simply an end-user of a Drupal website, Drupal 8 has tons in store for you! This blog series will attempt to enumerate the major changes in Drupal 8. Successive posts will gradually get more technical, so feel free to skip to later parts (once they're published) if you're more on the geeky side.