Case Study: IBM Consulting helps a global automotive manufacturer accelerate application modernization with CAST Imaging

IBM accelerates legacy documentation 3.3x with CAST

IBM, a global automotive manufacturer, faced a challenge modernizing a massive 10-million-line legacy Java application. The application had complex dependencies and outdated documentation, with critical knowledge held by only a few experts. This made impact analysis slow and changes risky for their business operations. The vendor CAST, using its CAST Imaging product, was engaged to help address this.

The solution from CAST involved using CAST Imaging to perform deterministic discovery of the codebase, creating architecture maps and call graphs. These outputs were fed into a knowledge base that powered AI agents with grounded intelligence. This allowed IBM's consultants to accelerate demystification and planning. As a result, IBM reported spending up to 70% less time on documentation and 60% less on impact analysis, making those processes 3.3x and 2.5x faster, while achieving over 50% productivity gains.

IBM