So I ran into an interesting issue a while back doing something on a project at work. I was doing something that involved interacting with files on S3, and had updated the AWS libraries my application was using, but I was running into errors every time I tried to do anything that touched S3. The issue wound up being a dependency conflict between my code and an S3 wrapper utility we wrote around the AWS SDK. While the main project’s AWS SDK was up-to-date, the utility had older versions that were causing the errors. Although I had used Amazon’s BOM and thought that made sure that my AWS libraries were all set to a particular version, the reality was that assurance didn’t spread to other libraries my project pulled in. The solution was simple enough – update the AWS SDK versions in our other internal library, but that did lead to the question, how does one manage dependencies between projects?