Which IBM Z ecosystem component does wca4z integrate with to collect application metadata before transformation?

Think of it like working hands-on with IBM mainframe systems — the answer here is 'IBM OMEGAMON for z/OS performance monitoring'. wca4z integrates with ADDI to harvest application metadata, dependency graphs, and source inventory that inform all subsequent modernization phases. On real mainframe exams, this concept comes up repeatedly so make sure you have it locked in.