Adel Al-Saleh
CEO, T-Systems International GmbH

The effects of environmental degradation and rising temperatures are already being felt, often in the world’s most vulnerable communities. Unless we take concerted action now, climate change will lead to greater instability and suffering. This makes it our clear moral responsibility – and now, following the German Constitutional Court’s ruling in April 2021, our legal responsibility as well.

T-Systems announced its participation in the Climate Neutral Data Centre Pact (CNDCP) in May 2021. This involves us in a commitment to make datacenters climate neutral by 2030. The self-regulatory initiative includes an ambitious set of goals, which cover energy efficiency, recycling of surplus heat, and water conservation. Under the banner “The Green Deal needs green infrastructure,” the Pact affirms our commitment to the European Green Deal. We believe our services will play a central role in decoupling economic development from emissions growth.

But our infrastructure is not the only thing going green. Our services are making the entire economy greener. Our clients can decrease their energy use by migrating from their own IT infrastructure to the T-Systems Cloud Solutions. Technologies such as the Digital Twin take processes out of the physical world, help conserve our planet’s resources and decarbonize production. The Gaia-X initiative creates the basis for exchanging sustainability data along the entire supply chain, enabling informed environmental decisions. But as society generates ever-growing volumes of data, to fully reap the environmental benefits of digitalization, our datacenters need to be sustainable too. That’s why we have committed to this initiative, alongside some of our major partners.

This initiative is part of a more broadly-based drive at Deutsche Telekom. The entire Group has obtained energy exclusively from renewable sources since the beginning of the year under review. We are also developing innovative green technologies for cloud computing at our datacenter in Biere, in partnership with the Fraunhofer Institute. Sustainability is the key focus of our corporate responsibility. We are targeting climate neutrality across our entire value chain by 2040.

At T-Systems we are committed to offering services which drive sustainability with our clients and partners. Joining the CNDCP reflects this. We are going to challenge ourselves to reach our sustainability goals and indeed surpass them. It is the morally responsible thing to do – for ourselves and for future generations.


Key facts at a glance

Markets, business areas and market share  

T-Systems is the subsidiary of Deutsche Telekom that offers integrated end-to-end IT solutions and drives the digital transformation for business customers in all industries and the public sector. 

The systematic approach is enabled by four focus areas – IT solutions advisory, multi-cloud environment enablement and operation, security services, and digitization support and development. Its focus industries include automotive, manufacturing, logistics and transportation, as well as healthcare, and the public sector. 

T-Systems is positioned in Europe as the number one IT-services provider in Germany and number two in the German-speaking DACH region (Germany, Austria, Switzerland). It also has a presence in selected core markets and at strategic production locations. The company has around 28 000 employees and revenue of EUR 4.0 billion (2021). T-Systems is headquartered in Germany and has a presence in Europe, and in selected core markets and strategic production locations in a total of 20 countries. T-Systems can provide a global production and supply chain to companies operating worldwide.

Number of customers   400 corporate customers, representing all sectors, many including DAX30 companies
Number of employees   Around 28 000
Shareholding of Deutsche Telekom AG since   T-Systems was founded 2001, 100% Deutsche Telekom

ISO 9001:2015  
ISO 14001:2015
ISO 45001:2018 
ISO 50001

Please refer to the Internet for further information   www.t-systems.de

Programmed in less than 50 Days: Deutsche Telekom and SAP publish Corona Warn App

  • More than 39.5 million downloads by the end of 2021
  • The largest open-source project ever by the German Government
  • The “ideal app” for Germany

Corona Warn App
Germany’s IT industry delivers: After just 50 days, the German Government’s Corona Warn App img was ready to go and has been available to download from both the Apple App Store and the Google Play Store since the evening of 15 June. The app has already been downloaded over 24 million times since then. The app was created in close collaboration between SAP and Deutsche Telekom, along with other partners. The two companies developed the app under an open-source approach. The development of the program coding could be followed continuously on the GitHub developer platform. Experts could monitor the development status at all times. As a result, every line of code is transparent for the general public. Over the course of the app development, more than 109 000 individual visitors viewed the coding and there were some 7 250 contributions from community and project team members. It is hard to imagine how a software project of such crucial importance could have been developed more transparently. The Corona Warn App is the largest open-source project ever carried out on behalf of the German Government.

The new “Digital Solutions” division of T-Systems at Deutsche Telekom and SAP has digitalized a process for the successful interruption of infection chains in the COVID-19 pandemic using this app: from possible infection to the warning of potentially exposed contact persons and from smartphone to testing lab. The user experience – operation, data privacy, and hotline integration – was always the focus of development. The Corona Warn App was ordered by the German Government and is one of the first European apps to be based on the current specifications of the Exposure Notification Framework provided by Apple and Google. This enables users of Android-based smartphones and iPhones to run the app on their devices in the background, while continuing to use their favorite apps at the same time.

We are continuously developing the app further: In 2021, the EU digital vaccination certificate and a check-in function, for example for restaurant visits, were integrated. There are also comprehensive information features, for example on incidence values. 

High data privacy and data security standards
In particular, aspects of data privacy and data security were covered in close collaboration with key public institutions like the German Federal Office for Information Security (BSI) and Germany’s Federal Data Protection Commissioner (BfDI). The app does not require users to enter any personal data at all. The Corona Warn App does not need information like name, age, or address, nor does it track user locations. The app only shares randomly generated keys when two smartphones get in close proximity of each other for a specified period of time. The keys from the recorded encounters are saved directly on the users’ smartphones. It is not possible to determine which device is behind a particular key, because the keys are encrypted. The BSI has determined that the source code has a very high level of quality. The developer team has been compliant with recognized best practices for software architecture, programming style, and software security. All critical vulnerabilities identified by the BSI over the course of the open-source development process were quickly eliminated.

The “ideal app” for Germany
Decentralized, voluntary, and without user identifiability – according to the Nuremberg Institute for Market Decisions, these are the most important characteristics Germans want from a coronavirus tracing app. The Corona Warn App developed by Deutsche Telekom and SAP on behalf of the German Government meets all of these demands. The two companies worked together to create a digital solution that takes the general public’s desire for privacy into account in the battle against the COVID-19 pandemic.

Further information can be found here.

#GreenMagenta label for T-Systems solutions

EcoShift Platform
Companies want to take more and more responsibility in the field of sustainability and they are going to have to step up. The creation of sustainability reports with transparent carbon emission balances is going to be an inherent part of strategic action in relation to environmental, social, and economic challenges.

For the first time, our sustainability platform gives companies the opportunity to record employee commuting data in real time using an App img and to process it further in anonymized form. This is an ideal tool for raising awareness of emissions. The movement data can be analyzed extensively and this provides the basis for active measures to reduce carbon emissions in the field of employee mobility. The emissions transparency achieved in this way leads to a strong awareness among employees and to an active reduction in carbon emissions.

The connection to third-party systems and the simple creation of sustainability reports are further functionalities of the sustainability platform (more information).

SAP Cloud Services
Who knows exactly how our customers’ goods and products are made and what resources are needed? Their SAP systems! SAP solutions enable customers to analyze and optimize the resource consumption along their entire value chain. We manage SAP systems for clients on our cloud platforms. We bolster our customers’ endeavors for more sustainable business with SAP services run on state-of-the-art technology and 100 percent renewable energy. Read more about our Cloud Solutions for Modern SAP® Landscapes.

Airport Collaborative Decision Making (A-CDM)
Airport Collaborative Decision Making (A-CDM) is a process that provides all airport stakeholders with improved information sharing and better collaboration to make an airport's operations more effective and reduce emissions and fuel with increased punctuality and predictability. A-CDM provides better communication to enable improved coordination between the airport, air traffic control, ground handling services and airlines, as well as significantly reducing emissions, fuel consumption and minimizing environmental impact. Passengers also benefit from reduced delays.

Remote Testlab
Our innovative Remote Testlab solution facilitates 24/7 access to test units and performance of both manual and automatic tests on real hardware. Under normal circumstances, this usually requires a lot of travel and resources. We help to access and test centralized test units from anywhere in the world without having to get on an airplane. Likewise, complex hardware test units no longer have to be sent to development service providers on shipping routes. In future, the support we provide today specifically for the vehicle development process will be supplemented by opportunities we create for in-car software developers and system integrators.

Legacy systems are a security threat and bad for the environment. Our M.A.R.S. solution historizes legacy data assets and makes them available to all users on the Open Telekom Cloud. Our cloud servers are powered by 100 percent renewable energy sources and are maintained by our own security experts. That’s how we protect the environment and your data.

More information can be found here.

Increasing data center sustainability

T-Systems experts are working together with the Fraunhofer IFF to develop measures to create more sustainability in the operation of datacenters.

The long-term goal: a datacenter that is self-sufficient as a result of an intelligent interplay of renewable energy generation, electricity storage and flexible power loads.


As part of our CR management, we also focus on mobility. Our goal is to make our car fleet more sustainable – in particular through more eMobility. We are currently revising our car policy, which will define further steps toward greener mobility. It will be published in spring 2022.

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