Our Mainframe Managed Services provides a complete and holistic service offering for your mainframe environment. It includes traditional roles such as Operating System, Subsystem and ISV support as well as DBA, Performance/Workload/Capacity Management, Technical Project Management, Application Optimization, High Availability, Disaster Recovery, and others.

  • Operating Systems: z/OS, z/VM, z/Linux, as well as the z/VSE world
  • DB/DC Systems: CICS, DB2, IMS, IDMS (for those still out there), and others
  • Security: RACF, ACF2, TopSecret (TSS)
  • Migration services to/from each of these
  • Virtually all any past and present ISV products


We have worked with clients in most industry verticals to provide support services in budget- sensitive fashion. If you are challenged to sell staff augmentation to your management team or to make a cost case close, reach out to us to see how we can help.
The GTSG Mainframe Support Services Offering is a proven, dynamic, and viable solution to satisfy your ever-changing needs.
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