Actually, this isn't quite dry-run. What this does is calculate the diff between two templates, and just provide the operations from that diff. It does not insp

Actually, this isn't quite dry-run. What this does is calculate the diff between two templates, and just provide the operations from that diff. It does not inspect the current state of resources to see if there were any out-of-band changes that would be unwound. So it gets you closer to a dry-run, but is not as complete as terraform's.