... ... IBM z/OS Operating System

IBM z/OS Operating System is a widely used mainframe operating system that is designed to offer a stable, secure, and continuously available environment for applications running on the mainframe.

Deloitte

Management Consulting

Morgan Stanley

Financial Services

Citi

Financial Services

Credit Suisse

Banking

Capgemini

Information Services

Accenture

Information Services

Goldman Sachs

Financial Services

Deutsche Bank

Financial Services

Fidelity Investments

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SAP

Software - General

Rogers Communications

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General Motors

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Walmart

Retail - General

DHL

Logistics & Supply Chain - General

Cognizant

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Verizon

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Daimler AG

Automotive

HCL America, Inc.

Information Services

Mayo Clinic

Hospitals & Healthcare