T-Systems' Certification Management Team ensures that ISO certifications are regularly renewed.

T-Systems certificates

Certified processes and services facilitate orientation in our wide range of products and services

  • Compliance with international quality standards
  • Proven know-how and high security requirements
  • Regular renewal of audit procedures
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Product/service quality and data security are a matter of trust

T-Systems operates data networks and processes data for its customers worldwide in its own data centers, giving absolute top priority to data protection and data security. The ICT provider therefore has its services audited regularly by independent institutes. Furthermore, the provider has its compliance with global standards accredited, for instance, through ISO certifications.
Sustainable corporate management is the basis for the wide range of certificates awarded. T-Systems subsidiaries thus currently meet standards ranging from quality management, information security management and service management requirements to environmental management and occupational safety and health care.

Top marks for high service standards

T-Systems achieves excellent scores in surveys, for example, on customer satisfaction. In the current TRI*M study by TSN Infratest, the Telekom subsidiary is once again among the top 10 percent of European ICT service providers.

Integrated management system at T-Systems

The Certification Management Team is responsible for global management of all activities relating to ISO certifications, as well as the regular review according to international standards. That way, T-Systems ensures that customers worldwide are aware of the high standards and can enter into a trustworthy working relationship.

T-Systems is working with various certification authorities

Current certificates
ISO/IEC 9001
As an internationally established standard, ISO 9001 outlines the minimum requirements for a quality management system that an organization must fulfill in order to provide products and services that meet both customer expectations and legal requirements.
Current certificate ISO 9001
ISO/IEC 20000-1
ISO/IEC 20000-1 specifies requirements for service providers for the enhanced planning, rollout, implementation, operation, monitoring, review, maintenance and improvement of their SMS.
Current certificate ISO/IEC 20000-1
ISO/IEC 27001
As an international standard, ISO/IEC 27001 defines requirements for the rollout, implementation, monitoring and optimization of information security management systems (ISMS).
Current certificate ISO/IEC 27001
ISO 22301
The internationally valid ISO standard 22301 provides the framework for holistic business continuity management in the company in order to minimize potential damage in the event of a disruption.
Current certificate ISO/IEC 22301
ISO 14001
This certification is proof of a cost-effective and efficient environmental management system. ISO 14001 identifies weaknesses in the environmental management system, thus laying the basis for a continuous improvement process.
Current certificate ISO 14001
*(Under the umbrella certificate of Deutsche Telekom AG)
OHSAS 18001
The emphasis of the ISO 45001 standard is on the protection of people, their occupational safety and health care. Preventive measures must be implemented to avoid accidents and illnesses. 
Current certificate ISO 45001
*(Under the umbrella certificate of Deutsche Telekom AG)
ISO/IEC 27017
ISO/IEC 27017:2015 provides guidance on the information security aspects of cloud computing. The standard gives guidelines for information security controls applicable to the provision and use of cloud services by providing:
  • Additional implementation guidance for relevant controls specified in ISO/IEC 27002
  • Additional controls with implementation guidance that specifically relate to cloud services
This standard provides controls and implementation guidance for both cloud service providers and cloud service customers to help make cloud services as safe and secure as the rest of the data included in a certified information management system.
Current certificate ISO/IEC 27017
ISO/IEC 27018
ISO/IEC 27018:2014 establishes commonly accepted control objectives, controls and guidelines for implementing measures to protect Personally Identifiable Information (PII) in accordance with the privacy principles in ISO/IEC 29100 for the public cloud computing environment.
In particular, ISO/IEC 27018:2014 specifies guidelines based on ISO/IEC 27002, taking into consideration the regulatory requirements for the protection of PII which might be applicable within the context of the information security risk environment(s) of a provider of public cloud services. The standard provides guidance aimed at ensuring that cloud service providers offer suitable information security controls to protect the privacy of their customers’ clients by securing PII (Personally Identifiable Information) entrusted to them.
Current certificate ISO/IEC 27018
DEKRA Trusted Cloud vCloud OTC
With the TCDP 1.0 certificate, T-Systems is the first IT Service Provider to comply with a legally compliant data protection certification for defined cloud services.
A certificate based on the Trusted Cloud Data Protection Profile (TCDP) makes it much easier for companies to fulfill the control obligations for commissioned data processing. The TCDP formulates objective criteria that can be used to compare the security level of different cloud services. These criteria are grouped into clear protection classes. By selecting a service with the TCDP certificate, the control obligations are fulfilled according to the German Federal Data Protection Act. TCDP is based on ISO 27001 and ISO 27018.
Advantages for our customers:
  • Cost savings because an own assessment pursuant to § 11 paragraph 2 of the German Data Protection Act (BDSG) is no longer required
  • The level of data protection of the service can be assessed transparently
  • The possibility of observing the data protection regulations against their own customers.
The CSA STAR Certification is an independent third party assessment of the security of a cloud service provider. The technology-neutral certification leverages the requirements of the ISO/IEC 27001 management system standard together with the CSA Cloud Controls Matrix, a specified set of criteria that measures the capability levels of the cloud service.
Current certificate CSA STAR
The IDW PS 980 defines the basic elements of a compliance management system and other terms in a very structured form. The standard provides compliance officers in companies with a guideline and the basis for compliance with laws, regulations and self-commitments within the framework of a compliance management system and provides companies with possibilities to demonstrate their own compliance and also to place specific requirements on their business partners.
An audit according to this standard allows an independent statement to the company's own CMS in comparison to a general standard.
To audit report on the effectiveness of the compliance management system according to IDW PS 980 for the Anti-Corruption section of T-Systems International GmbH. 
Certified Deutsche Telekom companies: Deutsche Telekom AG, Telekom Deutschland GmbH, T-Systems International, Detecon, Telekom Shop Gesellschaft, Vivento Customer Services, Deutsche Telekom Kundenservice, Deutsche Telekom Technischer Service, Deutsche Telekom Technik, Deutsche Telekom Regional Services and Solutions.
In addition to T-Systems’ certification in accordance with ISO 27001, the security and performance of individual solutions and products offered by the trust center are assured through regular certifications. The team works in accordance with the requirements of the European Telecommunications Standards Institute (ETSI). TÜV Informationstechnik GmbH has successfully audited the T-Systems CA’s: CP/CPS TeleSec ServerPass and TeleSec Shared-Business-CA.
ETSI audit certificate TeleSec
Deutsche Telekom complies with EU requirements for electronic identification, authentication and trust service (eIDAS).
Pursuant to Article 21(2) in conjunction with Article 3(16a) of Regulation (EEC) No 910/2014 (eIDAS Regulation) was awarded the status of qualified trust service provider for the creation of qualified certificates for electronic signatures for the trust service TeleSec Public Key Services.
eIDAS Certificate for TeleSec Public Key Services