AWS Neptune: A New Vertex in the Graph World – But Where’s the Edge?

NoSQL is a very wide field. There are lots of special cases in which certain NoSQL data stores can help a lot. One of the points the posted article makes is that native multi-model databases help you not to sacrifice relational and yet reap some of the benefits certain NoSQL data models (like graph) can provide.

Graph really is fantastic and I personally see it as such a competitive advantage in many applications. ArangoDB rocks my personal world

Postgres is definitely a great choice if you want a taste of NoSQL-like flexibility while staying in the familiar SQL world. In my eyes, ArangoDB provides similar benefits if you want to move beyond SQL without going "all in" with a pure graph database.

You can model your data as documents and use arbitrary joins to start with and then restructure your data in terms of edges and vectors when you run into situations where you would benefit from graph queries. It's not either-or and because ArangoDB is multi-model you can mix both approaches in the same queries.