What role does a facade pattern play in the Refactor phase of IBM Z Modernization?
Select an answer to reveal the explanation.
Short Explanation
A facade gives you one simple entry point into a messy cluster of COBOL programs, so callers don't need to know the internals. That lets you swap the guts to Java later without rewriting the callers. Keep that pattern locked in for mainframe modernization questions.
Full Explanation
A facade gives one simplified interface to complex COBOL programs, hiding internals and letting you swap logic to Java without changing callers. It doesn't route CICS/VTAM traffic, inject logging/monitoring into COBOL, or automatically compress copybooks over the network.