Digital Rights Management (DRM) is the protection of copyrighted works by various means to control or prevent digital copies from being shared over computer networks or telecommunications networks.
The digitalization of content has challenged traditional copyright laws on two fronts. First, it has enabled nearly cost-free reproduction and large-scale distribution of digital content. Second, existing digital content easily can be remixed and “mashed-up” (combined in various ways) with other content to produce new works. In response to these changes, copyright holders have sought greater protection through legal and technological remedies.
Source: https://www.britannica.com/topic/digital-rights-management