The following is the Oct. 23, 2020 Congressional Research Service In Focus report, Joint All-Domain Command and Control (JADC2).
From the report
What Is JADC2?
Joint All-Domain Command and Control (JADC2) is the Department of Defense’s (DOD’s) concept to connect sensors from all of the military services—Air Force, Army, Marine Corps, Navy, and Space Force—into a single network. Traditionally, each of the military services developed its own tactical network that was incompatible with those of...
https://news.usni.org/2020/10/27/report-to-congress-on-joint-all-domain-command-and-control