eDiscovery
Searching, preserving, and exporting electronic content in response to a legal, regulatory, or investigative request.
A request arrives asking for everything relating to a matter across mail, files, and chat. eDiscovery is the tooling that finds it, holds it so it cannot be altered, and exports it in a defensible format.
Premium capabilities such as case management, review sets, and analytics require higher licensing. The basic tier can search and export but does not scale well to a serious matter.
Where this comes up
eDiscovery sits inside our microsoft 365 and cloud work. If you are trying to work out what this means for your own environment rather than in the abstract, that is the page worth reading next, and a short call will get you a straight answer faster than either.