There are a bunch of projects we want to complete. Doing so requires me to inform a couple of other teams so that they can solve more fundamental problems so th

There are a bunch of projects we want to complete. Doing so requires me to inform a couple of other teams so that they can solve more fundamental problems so that we can finish our projects. Sometimes things change and I have to find and notify the right people, and tell them that there are now more of the fundamental problems or that there are now different ones. I keep track of this dependency graph manually, and sometimes I make a mistake. Something that would prevent me from making a mistake and that would make managing this easier would be cool. Mentally, it's a directed graph and you sort of flood-fill out of the node where the change is occurring. Just knowing which other things are affected would be enough. Of course, if there's already something useful for this already, do let me know. This sort of sounds like something I should be able to do with project management tools but I haven't figured out how to do it yet.