AWS Neptune Graph Database as a service

Fascinating to see Amazon AWS supporting graph databases with their Neptune service - I have been working as a machine learning practitioner at Capital One (I manage a machine learning team there) but in a previous life, I worked with the Knowledge Graph when I was a consultant at Google and I have written a few semantic web/linked data books.

As a side project at home I have been looking into Knowledge Graph building tools so Amazon;s new offering looks useful! I like that they support both SPARQL and and Gremlin for queries.