IBM InfoSphere Information Analyzer

I am in need of some help. I work as a recruiter for my company and have been tasked with finding a Quality Data lead that has IBM Infosphere information analyzer experience. That is not the issue, the issue that I am running into is that all my candidates have been Data Stage heavy. I have tried to research how the two interact. All I keep finding is adverts on how awesome the tool is and blah blah blah.

Can someone please explain this to me? I have so many questions that the silly adverts aren’t answering!