Case Study: Anglo-Gulf Trade Bank accelerates legacy modernization with Publicis Sapient Slingshot

Anglo-Gulf Trade Bank cuts code-to-spec effort by 70-85% with Publicis Sapient

The customer, a major global bank, faced the challenge of modernizing its core banking services built on decades-old legacy COBOL systems. Manually tracing the logic embedded in nearly three million lines of code across hundreds of programs was slow, inconsistent, and difficult to scale, which delayed their modernization initiatives and increased operational risk. The vendor Publicis Sapient addressed this challenge using their Slingshot platform on Google Cloud.

Publicis Sapient implemented Slingshot’s AI-powered code-to-spec capability to dynamically extract business rules from the legacy code and convert them into clear, structured specifications. This solution achieved a 95% specification accuracy rate and reduced manual code-to-spec effort by 70-85%. The bank converted its entire codebase into verified specifications in just eight weeks, accelerating its modernization planning and significantly reducing delivery risk.

Anglo-Gulf Trade Bank