Case Study: ANZ Bank modernizes core banking DevOps and boosts productivity with IBM

Modernizing DevOps for core banking systems ANZ Bank empowers its developers with Git™ and integrated DevOps practices

ANZ Bank, a multinational financial institution, was struggling with manual, tightly coupled mainframe development and deployment processes that slowed delivery, increased outage risk, and made it hard to support modern banking demands. The bank turned to IBM to modernize its core banking DevOps practices, using IBM Developer for z/OS and IBM Dependency Based Build to replace legacy workflows with a more agile, Git-based approach.

IBM implemented an integrated mainframe DevOps framework that combined new tooling, cultural change, and incremental rollout across ANZ’s applications. Within 8 months, ANZ had enabled CI/CD for about 40 applications, including 3 critical core banking systems, and moved more than 1,000 repositories to Git-based version control. The results included about 90% lower licensing costs, 50% fewer planned maintenance outages, 60% less manual effort by operations, 25% higher developer productivity, and hotfix delivery times reduced from about 4 weeks to as little as 1 hour.

ANZ Bank

Charan Ankushapur

Core Banking Engineering Lead