AT&T vs T-Systems

Unbiased reviews from our professional community. A complete perspective on vendors based on user input.
AT&T
Based on 117 reviews.
T-Systems
Latest Research
Overview
AT&T Inc. is an American multinational telecommunications corporation, headquartered at Whitacre Tower in downtown Dallas, Texas. AT&T Inc. began its existence as Southwestern Bell Corporation, one of seven Regional Bell Operating Companies created in 1983 in the divestiture of the American Telephone and Telegraph Company following the 1982 United States v. AT&T antitrust lawsuit. Southwestern Bell changed its name to SBC Communications Inc. in 1995. In 2005, SBC purchased former parent AT&T Corp. and took on its branding, with the merged entity naming itself AT&T Inc. and using the iconic AT&T Corp. logo and stock-trading symbol.T-Systems is a German global IT services and consulting company headquartered in Frankfurt. Founded in October 2000, it is a subsidiary of Deutsche Telekom. The company operates in more than 20 countries and employs approximately 50,000 people worldwide, among them around 27,000 in Germany and 27,000 outside. Since December 2007 Reinhard Clemens is the CEO. Before that, he was president of EDS Germany since 2003.
Sample Customers
AT&T Communications Outsourcing: Red Sky Valued Properties
AT&T Managed Security Services: Childrens Health System of Texas
AT&T Network Services: CP Morgan, Hall County School Board, OrthoIndy, Placer County
T-Systems Communications Outsourcing: Fraport AG
T-Systems Managed Security Services: 1899 Hoffenheim, Enterprise Rent-A-Car, HIL Heeresinstandsetzungslogistik GmbH, NXP Semiconductors, Anvis Group
T-Systems Network Services: 1899 Hoffenheim, Enterprise Rent-A-Car, Fraport AG, SV SparkassenVersicherung
Popular Solutions
Top Industries
Comms Service Provider
26%
Computer Software Company
25%
Government
5%
University
4%
No Data Available
Quotes From Member Reviews
We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
Most Helpful Reviews
Review 1 of 4
No Data Available
Customer Service
Review 1 of 30
No Data Available
Technical Support
No Data Available
No Data Available
We monitor all reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.