Azure Devops: what does changed date mean? What kind of changes does it track?

Question

I am working in a change management team and I need to create a dashboard where I can see how many changes have been within an area path. I created a query with the field "changed date" however I do not know what does that track? Does it track if there is any change in the description? What I am interested in is that how many features have been moved to the next iteration path.

Answer 1

Changed Date tracks any changes made for work item (not just Description). You could see it from History tab also, which you could open for work item using the following icon:

Answer 2

It tracks any change made to the work item.