Microsoft Transaction Server (MTS) was a COM-based transaction processing system for developing, deploying, and managing network applications.
Microsoft Transaction Server (MTS, sometimes abbreviated MTx) was a COM-based transaction processing system for developing, deploying, and managing network applications. The main services provided by MTS were automated transaction management, instance management and role-based security.
MTS was released as an add-on to Windows NT 4.0 as part of the NT 4.0 Option Pack. Starting with Windows 2000, new features were added to MTS and the product was renamed COM+.
MTS reference material is located at the Technet archive under Transaction Server.
MTS transactions were reliant on the Microsoft Distributed Transaction Coordinator (DTC).