Overview
Mainframes continue to run the world's most critical business operations, yet modernizing them has never been more urgent. Enterprises today must modernize while navigating growing pressures around AI adoption, security and compliance, legacy skill shortages and the need to make mainframe data more accessible across hybrid cloud environments.
Even as enterprises accelerate modernization initiatives, mainframes remain central to global commerce and mission-critical operations:
- 68% of global production IT workloads run on mainframes
- 90% of all credit card transactions are processed through them
- More than $8 trillion in commerce flows through mainframe systems daily
This has shifted the modernization discussion from replacement to reinvention. It involves integrating mainframes into secure, scalable and AI-ready hybrid cloud setups without disrupting business continuity.
HCLTech’s phased modernization approach enables enterprises to transform with greater control, lower risk and minimal disruption to business operations. Starting with a comprehensive assessment of the existing environment, we define the right modernization pathway based on business priorities, operational complexity, risk tolerance and long-term transformation goals.


