If you don’t want to run a maven repository server like Nessus, you can use AWS S3 for your maven repository for your java artifacts. You can make the repository public in the same way as you’d make a website public. However, it’s more likely that you’ll want to make it private and authenticate using AWS IAM. Here are some step by step instructions that appear useful.
(Note there’s another S3 maven wagon, but it does not appear to support authentication.)
Why do this? It’s one more piece of infrastructure that you don’t have to maintain, update, and run.