For years, Drupal site builders have endured a less than great experience with any media they wanted to use.  It was difficult to manage and reuse images; let alone video, audio, and other media.  A number of excellent contributed modules tried to bridge that gap in Drupal 7; however Drupal 8 committed to having a media manager in core.  

As of December 2019, that wait is over with the Media module now officially out of "experimental" and fully integrated into Drupal core.