The BizTalk group is a unit of organization that usually represents an enterprise, department, hub, or other business units that require a contained BizTalk Server implementation. The BizTalk group has a one-to-one relationship with a BizTalk Server Management database (also known as the BizTalk Server Configuration database in BizTalk Server).
The BizTalk Group object is part of BizTalk Application View model; the object identifies a BizTalk Server installation and its health depends on the health of BizTalk Server applications and BizTalk Server host processes.