List of IBM z/OS Customers
IBM
1 New Orchard Road,
Armonk, 10504, NY,
United States
Armonk, 10504, NY,
United States
1 914-499-1900
Professional Services
293000
$67.5B
Since 2010, our global team of researchers has been studying IBM z/OS customers around the world, aggregating massive amounts of data points that form the basis of our forecast assumptions and perhaps the rise and fall of certain vendors and their products on a quarterly basis.
Each quarter our research team identifies companies that have purchased IBM z/OS for Operating System (OS) from public (Press Releases, Customer References, Testimonials, Case Studies and Success Stories) and proprietary sources, including the customer size, industry, location, implementation status, partner involvement, LOB Key Stakeholders and related IT decision-makers contact details.
Companies using IBM z/OS for Operating System (OS) include: State of Louisiana, a United States based Government organisation with 69906 employees and revenues of $47.60 billion, Synchrony, a United States based Banking and Financial Services organisation with 20000 employees and revenues of $16.13 billion, Blue Cross Blue Shield of Minnesota, a United States based Insurance organisation with 3900 employees and revenues of $15.30 billion, dm-drogerie markt, a Germany based Retail organisation with 79745 employees and revenues of $14.79 billion, KfW, a Germany based Banking and Financial Services organisation with 8391 employees and revenues of $12.30 billion and many others.
Contact us if you need a completed and verified list of companies using IBM z/OS, including the breakdown by industry (21 Verticals), Geography (Region, Country, State, City), Company Size (Revenue, Employees, Asset) and related IT Decision Makers, Key Stakeholders, business and technology executives responsible for the software purchases.
The IBM z/OS customer wins are being incorporated in our Enterprise Applications Buyer Insight and Technographics Customer Database which has over 100 data fields that detail company usage of software systems and their digital transformation initiatives. Apps Run The World wants to become your No. 1 technographic data source!
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| Logo | Customer | Industry | Empl. | Revenue | Country | Vendor | Application | Category | When | SI | Insight |
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Administrador de Infraestructuras Ferroviarias (ADIF) | Transportation | 11612 | $836M | Spain | IBM | IBM z/OS | Operating System (OS) | 2010 | n/a |
In 2010, Administrador de Infraestructuras Ferroviarias (ADIF) contracted a managed infrastructure service to operate IBM z/OS on IBM z15 mainframe hardware hosted in third party data centers. IBM z/OS is deployed as an Operating System (OS) to support critical processes managed by the General Directorate of Security, Processes and Corporate Systems, and it is accessible from ADIF sites via dedicated lines and the Internet under a commercial managed service agreement.
The implementation centers on IBM z/OS v2.22 running on an IBM z15 Mainframe, with documented hardware and entitlement details including Product ID 5655P06 and entitlement 5601B28, Model Capacity 612 or Type model 5331-994 and referenced serial identifiers. The software stack implemented with IBM z/OS includes DFHSM, DFSMS, DFSRMM, JES2, Enterprise COBOL, Fortran and IBM PL/I compilers, DB2, WebSphere Application Server, and WebSphere MQseries, with mainframe backup references to VTS and DS8910F storage devices. Operational tooling in the logical environment includes Mainview for DB2, IMS, z/OS, WebSphere and MQseries, Autooperator for z/OS, ADT, TPX, EDITRAN, Webfocus and Focus to provide run time monitoring and operator automation.
Architecturally the service is provisioned as a third party hosted mainframe platform, with the successful bidder accountable for comprehensive management of both hardware infrastructure and software infrastructure to sustain continuity of service. The contract specifies access over dedicated lines and the Internet, and places responsibility on the provider for availability, reliability and security in line with the specification, encompassing backup processes, capacity type models and software entitlements for the IBM z/OS environment.
Governance and operational control remain within ADIF through the Digital Transformation and Systems Directorate which defines requirements and service levels, while day to day operations and platform management are delivered by the contracted provider. The engagement emphasizes procedural controls around mainframe operations, monitoring, backup and software entitlement management to ensure the IBM z/OS Operating System (OS) platform continues to support ADIF business functions that rely on mainframe hosted enterprise workloads.
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Allied Irish Banks | Banking and Financial Services | 10469 | $5.8B | Ireland | IBM | IBM z/OS | Operating System (OS) | 2010 | n/a |
Allied Irish Banks implemented IBM z/OS in 2010 as the central operating environment for its System z mainframe platform. The deployment used IBM z/OS within the Operating System (OS) category to underpin a retail banking systems transformation at the Dublin-based bank.
Implementation work focused on system-level security and service management, with an IBM Service Management solution incorporating IBM RACF and IBM Security zSecure configured on IBM z/OS. IBM Security zSecure was provisioned to handle audit and regulatory requirements, and z/OS served as the runtime and policy enforcement layer for mainframe-hosted retail banking applications.
The technical architecture extended to IBM Tivoli and IBM Information Management solutions to centralize security management and enable secure data sharing across disparate hardware and software platforms. This centralized approach positioned IBM z/OS as an enterprise security hub, integrating mainframe security controls with broader enterprise operations for consistent policy enforcement.
Governance changes focused on simplifying security administration and integrated audit reporting, with IBM Security zSecure reducing the administrative burden of audits and allowing security administrators to focus on security quality improvements. The project documentation highlights minimized complexity, reduced costs from security automation and improved compliance through integrated reporting as explicit benefits observed after the implementation.
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Baldor de Mexico | Manufacturing | 720 | $295M | Mexico | IBM | IBM z/OS | Operating System (OS) | 2003 | n/a |
In 2003, Baldor de Mexico deployed IBM z/OS, classified as Operating System (OS), as the core host for a consolidated SAP environment on an IBM eServer zSeries 990. The implementation centralized global SAP workloads including sales and distribution, manufacturing, payroll and finance, supporting 3,800 employees and 7,000 customers across the enterprise.
The environment used zSeries partitioning and virtualization technologies to run 24 separate partitions on SUSE Linux Enterprise Server 9 for SAP application servers, while IBM DB2 ran under IBM z/OS. IBM z/VM and IBM Parallel Sysplex were employed to manage virtualization and clustering, and HiperSockets provided near zero latency server-to-server communication between DB2 and Linux based SAP application servers. Storage and backup were provisioned on IBM TotalStorage DS8000 and DS8100 systems to protect nearly 14 terabytes of critical data.
Integration points included DB2 Universal Database for z/OS tightly coupled to mySAP Business Suite and SAP NetWeaver components, including the SAP Enterprise Portal which exposed live manufacturing and order information to customers and distributors. The deployment also enabled shop floor integration through the FlexFlow ShopFloor portal, using barcodes and RFID to bring live SAP data to shop floor terminals.
Operational governance focused on consolidation and automation, reducing the administrative footprint to fewer than 40 technology professionals through partitioning and centralized management on a single zSeries system. The architecture emphasized high availability and reliability, leveraging the zSeries 990 fault tolerance and Parallel Sysplex clustering to support always on enterprise requirements.
Baldor de Mexico reported an immediate increase in application performance and a 40 percent improvement in core business application performance, along with reduced operations overhead and IT costs as a result of the consolidation. The company cited avoided downtime risk as a critical driver, estimating systems downtime costs at more than $100,000 per hour, which influenced selection of the zSeries platform and TotalStorage backup architecture.
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Baldor Electric Company | Manufacturing | 3000 | $1.2B | United States | IBM | IBM z/OS | Operating System (OS) | 2001 | n/a |
In 2001 Baldor Electric Company deployed IBM z/OS, an Operating System (OS) platform, to underpin an accelerated analytics architecture supporting manufacturing and customer service analytics. The IBM z/OS deployment formed the core operating environment for IBM Db2 for z/OS and IBM Db2 Analytics Accelerator for z/OS, aligning the Operating System (OS) with high-performance data services to speed analytic drill down on customer and production data.
The implementation integrated IBM Db2 Analytics Accelerator for z/OS with SAP solutions, specifically SAP Business Suite and SAP Business Warehouse, running on IBM z Systems. IBM Db2 Analytics Accelerator for z/OS delivered accelerated query processing and faster load times against enterprise data, while IBM Db2 for z/OS provided transactional and analytical persistence on the IBM z/OS platform.
Operational coverage spanned sales, finance and production functions, extending analytics from manufacturing through delivery to support customer service objectives. The solution components, IBM z/OS, IBM Db2 for z/OS, IBM Db2 Analytics Accelerator for z/OS, SAP Business Suite and SAP Business Warehouse, were orchestrated to allow fast and efficient analysis of sales, finance and production data, enabling drill down and operational decisioning across the company.
Governance emphasized leveraging existing infrastructure, processes and skills on the IBM z Systems platform, with onsite support from experienced local Db2 personnel to manage platform operations and maintenance. Explicit business benefits reported included faster load times, onsite Db2 expertise and reduced maintenance costs based on newer technology, demonstrating how Baldor Electric Company used IBM z/OS to centralize analytics and support real-time manufacturing capabilities.
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Banco de Brasilia | Banking and Financial Services | 3280 | $693M | Brazil | IBM | IBM z/OS | Operating System (OS) | 2018 | n/a |
In 2018, Banco de Brasília implemented IBM z/OS as its Operating System (OS) to bolster mainframe infrastructure and management. The bank completed migration to IBM z15 mainframe in mid-2018 and then prioritized improving mainframe observability to automate activities, integrate platforms and monitor performance and availability across its fleet of servers and services.
The implementation centered on IBM z/OS monitoring capabilities, deploying the IBM OMEGAMON Data Provider as part of the IBM Z Service Management Suite and leveraging the IBM Tivoli Enterprise Portal for dashboarding. Configuration work included real-time data collection from monitoring agents under z/OS, instrumentation for IBM CICS Transaction Server, IBM Db2, IBM MQ, and capture of storage, network and Java metrics, as well as collection of historical statistics for trend analysis.
Integration architecture routed mainframe operational telemetry into the bank’s distributed observability stack, forwarding OMEGAMON output to Elasticsearch and Grafana and aligning with OpenSearch, Prometheus and Zabbix for unified visualization and alerting. The OMEGAMON Data Provider served as the central aggregation point, enabling the same monitoring processes and visualization resources to be applied to both mainframe and low-end platforms, producing integrated observability dashboards across the entire environment.
Governance and rollout were collaborative, with IBM monitoring specialists and BRB’s mainframe infrastructure team defining environments, configurations and knowledge transfer for production support. Operationalization included role-specific access to dashboards and alerting workflows, notably ITOPs and Db2 administrators receiving automated alerts for Db2 archive storage pool growth using OMEGAMON for Db2 Performance Expert agent features, which enabled early intervention on a subsequent storage event.
As a result of the IBM z/OS implementation and integrated monitoring stack, BRB established advanced, consolidated observability across mainframe and distributed systems, enabling more proactive monitoring, faster escalation pathways and strengthened operational security for core banking services.
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Banking and Financial Services | 7104 | $2.3B | Brazil | IBM | IBM z/OS | Operating System (OS) | 2002 | Indra Sistemas |
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Banking and Financial Services | 9489 | $2.9B | Argentina | IBM | IBM z/OS | Operating System (OS) | 2006 | IBM |
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Banking and Financial Services | 3096 | $874M | Brazil | IBM | IBM z/OS | Operating System (OS) | 2014 | n/a |
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Insurance | 3900 | $15.3B | United States | IBM | IBM z/OS | Operating System (OS) | 2009 | Computacenter US |
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Education | 15000 | $4.0B | United States | IBM | IBM z/OS | Operating System (OS) | 2011 | n/a |
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Showing 1 to 10 of 25 entries
Buyer Intent: Companies Evaluating IBM z/OS
ARTW Buyer Intent uncovers actionable customer signals, identifying software buyers actively evaluating IBM z/OS. Gain ongoing access to real-time prospects and uncover hidden opportunities. Companies Actively Evaluating IBM z/OS for Operating System (OS) include:
- Bloomberg Global, a United Kingdom based Professional Services organization with 10 Employees
- Brasil TecPar, a Brazil based Communications company with 270 Employees
- University of Oxford, a United Kingdom based Education organization with 16905 Employees
Discover Software Buyers actively Evaluating Enterprise Applications
| Logo | Company | Industry | Employees | Revenue | Country | Evaluated |
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Bloomberg Global | Professional Services | 10 | $7M | United Kingdom | 2025-10-07 |
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Brasil TecPar | Communications | 270 | $35M | Brazil | 2025-09-26 |
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University of Oxford | Education | 16905 | $4.2B | United Kingdom | 2025-08-04 |
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Manufacturing | 78434 | $22.6B | Finland | 2025-05-08 |
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Professional Services | 123 | $18M | Finland | 2025-03-21 |
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Professional Services | 150 | $20M | United States | 2024-12-09 |
FAQ - APPS RUN THE WORLD IBM z/OS Coverage
IBM z/OS is a Operating System (OS) solution from IBM.
Companies worldwide use IBM z/OS, from small firms to large enterprises across 21+ industries.
Organizations such as State of Louisiana, Synchrony, Blue Cross Blue Shield of Minnesota, dm-drogerie markt and KfW are recorded users of
IBM z/OS for Operating System (OS).
Companies using IBM z/OS are most concentrated in Government, Banking and Financial Services and Insurance, with adoption spanning over 21 industries.
Companies using IBM z/OS are most concentrated in United States and Germany, with adoption tracked across 195 countries worldwide. This global distribution highlights the popularity of IBM z/OS across Americas, EMEA, and APAC.
Companies using IBM z/OS range from small businesses with 0-100 employees - 0%, to mid-sized firms with 101-1,000 employees - 4%, large organizations with 1,001-10,000 employees - 44%, and global enterprises with 10,000+ employees - 52%.
Customers of IBM z/OS include firms across all revenue levels — from $0-100M, to $101M-$1B, $1B-$10B, and $10B+ global corporations.
Contact APPS RUN THE WORLD to access the full verified IBM z/OS customer database with detailed Firmographics such as industry, geography, revenue, and employee breakdowns as well as key decision makers in charge of Operating System (OS).