Making the right questions when they ask if you have any questions

Recently I got to know at an interview how company A (big western company) acquired another company years ago and are now working on redeveloping code that was an important part of the acquisition which fails to scale beyond the original use case.

This kind of stuff during interviews is a lot of learning in itself especially if you’re working already in the same area.

yeah, I've gotten this kind of knowledge from an interview before. They let slip a little something as to the project you will be working on, you start asking given the project you described I wonder if... and then they tend to tell you how it is.