We create clarity and shape the future of business-critical software systems.
Together with PKS we are able to offer our customers the mainframe as a high-performance platform for the digital future. Mainframe is the zFuture!
Georg Rätker
T-Systems, Head of Global Delivery Unit Automotive & Manufacturing Industries
THE COMPANY
T-Systems International GmbH belongs to T-Systems, the large-customer division of Deutsche Telekom. With a worldwide infrastructure of computing centres and networks, T-Systems operates information and communication technology (ICT) for multinational concerns and public institutions. For many decades its core business has included everything to do with the mainframe. T-Systems provides a complete value chain, operating infrastructure and applications, including their own products, as well as successfully supporting and further developing applications.
The Company
T-Systems International GmbH belongs to T-Systems, the large-customer division of Deutsche Telekom. With a worldwide infrastructure of computing centres and networks, T-Systems operates information and communication technology (ICT) for multinational concerns and public institutions. For many decades its core business has included everything to do with the mainframe. T-Systems provides a complete value chain, operating infrastructure and applications, including their own products, as well as successfully supporting and further developing applications.
A look back
For many years the mainframe platform had been considered outdated and was the object of replacement strategies. However, as the applications, often programmed in COBOL, contain complex and critical business processes, replacement projects tend to drag on or were postponed until an unspecified date.
The replacement strategy had considerable consequences for system architectures and the staff responsible: mainframe architectures were not being modernised in accordance with technical progress, nor were staff being increased in the continuously developing technology stack.
During this time, so-called “hybrid applications” developed, whose databases and business logic are still found on the mainframe platform and whose interfaces were implemented as modern web applications on X86 servers.
Due to the development of the mainframe as a high performance platform for modern architectures and the things now being required of big data and IoT due to digitisation, “the host” is now regaining considerable significance.
A closer look
Like other IT service providers, T-Systems faces two challenges:
modernising mainframe architectures and increasing young mainframe personnel

How do you create
How can
legacy landscapes be transformed from recording systems into catalysts of competitive advantage?
Which
A closer look
modernising mainframe architectures and increasing young mainframe personnel

How do you create
How can
legacy landscapes be transformed from recording systems into catalysts of competitive advantage?
Which
The solution
In 2017, together with PKS, T-Systems began its mainframe innovation journey.
Conclusion
The benefits at its glance
approach
business-critical
knowledge
Increase in skills and personnel
Innovative use cases
Agile tool chain
Future technology stack
- Strategy consulting
- eXplain
- Architecture consulting
The benefits at its glance
Agile organisation &
approach
business-critical
knowledge
Increase in skills and personnel
Agile tool chain
Future technology stack
- Strategy consulting
- eXplain
- Architecture consulting