title: difference between Product Backlog Item and Feature in Team Foundation work item types
body: <p>I have a question about Microsoft Team Foundation. In Visual Studio, Team Explorer, I can create a new work item. Work item types here are dictated by your team's chosen process template; I'm not sure which process template we're using. In any case, in Team Explorer, when I want to create a new work item, I'm given a list of work item types to select from, among which are "Product Backlog Item" and "Feature".</p>
  
  <p>I noticed a difference between the two types related to the target resolution date. For a Product Backlog Item, this would seem to be dictated by the iteration end date. For a Feature, it's not as clear. A Feature is also associated with an iteration (and iteration end date), however Feature also has a separate field called "Target Date". The mouse hover text for target date is "The target date for completing the feature".</p>
  
  <p>Should I choose "Product Backlog Item" or "Feature" as the work item type for my new work items? What's the difference between the two?</p>
  
  <p><img src="https://i.stack.imgur.com/LDbPU.png" alt="enter image description here"></p>