How is the Strangler Fig pattern applied during IBM Z Modernization?

Think of it like working hands-on with IBM mainframe systems — the answer here is 'New Java modules incrementally replace individual COBOL services while remaining COBOL continues to run in production'. The Strangler Fig pattern incrementally replaces COBOL services with Java equivalents, routing traffic to the new Java version while remaining COBOL continues to serve other functions, reducing risk v. On real mainframe exams, this concept comes up repeatedly so make sure you have it locked in.