What is the definition of 'Transport Group" in Transport Management System (TMS)?

In the Transport Management System (TMS) of SAP, a "Transport Group" is defined as:

C. A collection of SAP systems that share the same transport directory:A Transport Group in TMS groups together SAP systems that utilize a common transport directory. This shared directory serves as the central repository for all transport requests and files for the systems within the group. By sharing a transport directory, these systems can efficiently manage and execute transport requests across the landscape, ensuring consistency and streamlining the transport process.

This concept is fundamental in TMS to organize and manage transports in complex SAP landscapes, particularly in scenarios involving multiple systems with interdependencies or shared development and configuration efforts.