In addition, the apache license grants patent rights (§3 Grant of Patent License). Since it seems to be a research project, I assume they're just very happy to be able to put their name on it with Atlassian funding the patent :-)
Shared the approach with AWS ProServe, Stelligent (now Mphasis), and others as well, also discussed briefly with Atlassian architects probably in 2015-2016 timeframe.
Surprised if this isn’t one of those lots of folks just knocked out and didn’t think much of, and really should be in AWS toolkit.