#1 in Mainframe

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with the experts

We are the only certified partner in Argentina that offers the full range of IBM solutions, from software and hardware development to support and training. We provide comprehensive solutions in Hybrid Cloud Optimization, AI, and Digital Transformation, following industry best practices to empower your business.

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We Empower Your Innovation

Companies are entering the post-digitalization era. In 2026, Mainframe will have a relevant solution for this process: managing millions of data points at higher speeds, with the highest security standards on the market, and creating an environment conducive to innovation.

Our Services

Application Development

Application development in COBOL and assembly language under CICS or IMS
DB2 Services: Database Design, Optimization, and Operations
Script Programming: REXX

Training with hands-on practice in our own facilities:

z/OS Administration
Security
IMS/DB2 Database Engines
CICS/IMS
z/OS Operations
Communications
z/OS System Programmer
z/VM Administration and Installation
COBOL Development
Rexx Programming

Operation, Monitoring, and Automation

Scheduler Management and Administration
Automation Solutions
JCL Optimization and Utilities
Application Support: Support during the design, development, and implementation phases of legacy applications
Includes both batch and online applications
24/7 Help Desk Software

Infrastructure and Data Solutions

Marketing of all IBM value-added solutions
Servers
Accessories
Microcomputing

Operating System and Subsystems

z/OS Administration.
Security
IMS/DB2 Database Engines
CICS/IMS
z/OS Operations
Communications
z/OS System Programmer
z/VM Administration and Installation
COBOL Development
Rexx Programming
RACF

Services on Z/server

Host Connectivity Support
OpenSSH: SCP, SSH, SFTP, FTPS with TLS, TELNET Server with TLS, Policy Agent, AT/TLS, Quality of Service and IP Filtering, IPSEC
Communication Server (TCP/IP/VTAM)
Configuration and implementation of basic TCP/IP functions and services (Telnet, FTP, CSSMTP, SNMP). VIPA and DVIPA for SYSPLEX complexes. DDVIPA (Distributed Dynamic VIPA)
Port Distribution in a Sysplex, OMPROUTE (OSPF)
Dynamic Routing
Definitions for VTAM
Definitions and Implementation of Enterprise Extender
Troubleshooting Connectivity Issues

FREQUENTLY ASKED QUESTIONS

What is a mainframe, and why do large companies still use it?

A Mainframe is a large-scale, highly reliable computer with extremely high processing capacity, designed to handle massive volumes of critical transactions. IBM markets it under the z platform (currently z16/z17 hardware).

Large companies—especially banks—continue to use it because:

Processes millions of transactions per second with extremely high availability and no interruptions.
It is the core of global financial systems: payroll, settlements, end-of-day processing, loans, etc.
Unmatched Security and Auditing: Complies with stringent regulatory frameworks such as DORA, the ECB, and the EBA.
State-of-the-art hardware: IBM z16/z17 processors with the Telum chip include AI acceleration on silicon (NNPA instruction), enabling deep learning inference in nanoseconds directly from the core.

Is G&L Group an official IBM partner?

G&L Group positions itself as a specialist in certified IBM solutions, such as “IBM Gold Partner” “We have the official channels and the necessary licensing to deploy key technology tools,” covering everything from software and hardware development to support and training.

What mainframe development services does G&L Group offer?

G&L offers the following development and modernization services:

#	Service	Tools
1	Orphaned Source Code Recovery — Recovery of Lost COBOL Code Through Reverse Engineering and AI	IBM ADFz, watsonx Code Assistant for Z, Enterprise COBOL
2	Optimization and Migration to COBOL v6.x — Recompilation to take full advantage of z16/z17 hardware, reduction in MIPS/MSUs	Enterprise COBOL v6.x, IBM ABO, ZBNA
3	API Connectivity Modernization — Replacement of custom sockets with z/OS Connect EE with offload to zIIP	IBM z/OS Connect EE, CICS TS
4	Automated Documentation and Transaction Flow Map — Live dependency maps for COBOL/JCL/DB2/CICS	IBM ADDI, IBM Wazi Analyze

They also support the following languages: IBM Assembler, COBOL (all versions), REXX, PL/1, and Adabas/Natural, including support, reengineering, and full installation.

What connectivity and networking services does G&L Group offer on Z/server?

The z/OS Host Networking and Connectivity area covers:

Configuration and Administration of the z/OS Communication Server (TCPIP/VTAM):

Implementation and Management of TCP/IP Routing and Connectivity
TCP/IP Service Configuration: Telnet, FTP, CSSMTP, SNMP, VIPA
Support for Connect Direct, Netview, NetviewFTP, TPX, XCOM, and Supersession

High Availability and Network Security:

DVIPA (Dynamic Virtual IP) for SYSPLEX complexes
DDVIPA (Distributed Dynamic VIPA) for port distribution
Definitions for VTAM and Enterprise Extender

Security and Advanced Diagnostics:

OpenSSH (SCP, SSH, SFTP) and FTPS with TLS / AT-TLS
TELNET Server Configuration with TLS Policy Agent
OMPROUTE Dynamic Routing (OSPF)
QoS and IP Filtering with IPSEC
Analysis of SMF Reports and Troubleshooting Connectivity Issues
DR Infrastructure: Planning, Construction, and Testing with 24/7 support

What does G&L Group's mainframe training include?

The training is theoretical and practical, featuring IBM zPDT labs — that is, hands-on practice on z/OS without needing access to the client’s hardware.

Programming Language Courses:

IBM Assembler
COBOL (all versions, including those not supported by IBM)
REXX
PL/1
Adabas / Natural

Specialized business administration courses:

z/OS System Programmer
z/OS Operation
RACF (Basic and Advanced)
z/OS Communication Server (Networks)
Mainframe Databases

Infrastructure: In-house lab environments using IBM zPDT, allowing for intensive, hands-on practice on a functional mainframe platform with real-world production scenarios.

Does G&L Group offer 24/7 support for mainframe systems?

G&L offers 24/7 support as a core part of its value proposition. Specifically:

24/7 Rotating On-Call Support — Immediate response to critical incidents.
Proactive Infrastructure Monitoring using automated processes.
Specialized management of technical issues, including incidents, problems, and changes.
Active participation in Disaster Recovery (DR): planning, building, and testing infrastructure.
24/7 support in specific areas: Databases (DB2/IMS), CICS, Storage, SAF Security, and Networks.

We work with

IBM What's New

June 10, 2026

Mainframes and AI at the IBM Tech Summit Argentina 2026

The company participated in IBM's premier technology event in Argentina, the IBM Tech Summit Argentina, sharing insights on mainframe modernization, artificial intelligence, and digital transformation. G&L Group participated in…

Nicolas Fernando Ben

IBM

March 12, 2026

IBM recognized our commitment and excellence

The award was presented during the IBM Kick Off Partners Argentina event and recognized the work done by G&L Group in providing services and solutions within the IBM ecosystem. During…