Case Study: Wells Fargo achieves rapid, confident modernization of 4,500+ applications with CAST Highlight software intelligence (CAST)

Wells Fargo Performs Faster, Safer Modernization across 1000s of Applications with Software Intelligence from CAST

Wells Fargo, a global financial institution with over 260,000 employees and nearly $2 trillion in assets, faced a massive application modernization challenge: its portfolio of 4,500+ applications comprising hundreds of millions of lines of code included many systems untouched for a decade. The modernization team needed a scalable, objective way to assess each application’s condition, cloud readiness, and whether to retain, retire, rehost, replatform, repurchase, or refactor — without relying solely on subjective owner input.

Wells Fargo deployed CAST Highlight to automatically analyze source code for cloud readiness, technical debt, and open-source risks, and combined that objective intelligence with custom survey data from application owners. CAST identified specific migration Blockers, integrated findings via API into Wells Fargo’s development tools, and enabled automated portfolio segmentation and tracking — letting the bank assess thousands of apps in weeks instead of months or years and proceed with modernization decisions confidently.

Wells Fargo

Subhadaa Reddimasi

Head of Modernization & Cloud