I was about to suggest to merge the tags digital-media and e-resources but I am not fully sure. Is there a commonly agreed upon difference between both terms? I think the term e-resources is only used in libraries to refer to digital media. Wikipedia has only an article about electronic resource management (ERM) which could also be named "management of digital media".
I know this distinction only from Ex Libris, a vendor of library software. For example:
In this context, "electronic resources" refers to digital material an institution can license from a publisher and which is transferred to the library / the user on request. "Digital resources" on the other hand typically refers to files you actually own yourself and which are stored in an institutional repository or filesystem.
Personally, I find the wording of this distinction counter-intuitive. But in essence, it is justified, because it helps to distinguish between two types of materials which are processed in quite different library workflows (electronic resource management vs. repository management).