Case Study: Large European Bank achieves faster, defect-free mainframe development with Compuware visualization tools

How Visualization Helps a Major European Bank Manage More Mainframe Code Better, Faster and with Fewer Peoplehttp://resources.compuware.com/hubfs/Collateral/Case_Studies/31371_European_Bank_ccs.pdf

Large European Bank was facing a growing demand for mainframe changes even as its mainframe development staff shrank by about 30%. With no new COBOL development, teams had to rapidly modify legacy code to support web, mobile and distributed applications while delivering defect‑free, high‑performance releases under tight timelines—making fast diagnosis of functional and performance issues essential.

The bank implemented Compuware’s Topaz, Xpediter, File‑AID and Abend‑AID to provide visual insight into application relationships, runtime behavior and logic flows. Visualization cut issue‑finding from hours to minutes, clarified code‑change impact to avoid rework, and exposed a nightly sort‑call loop that a single fix reduced from hundreds of thousands of calls to one—shortening batch windows and enabling a unified mainframe/non‑mainframe workflow that improves collaboration and delivery speed.