Graph databases have been around for more than 15 years, but it was AWS and Microsoft getting in the domain that attracted widespread interest. If they are into this, there must be a reason.
Everyone wants to know more, few can really keep up and provide answers. And as this hitherto niche domain is in the mainstream now, the dynamics are changing dramatically. Besides new entries, existing players keep evolving.
I’ve done the hard work of evaluating solutions, so you don’t have to. An overview of the domain and selection methodology, as presented in Big Data Spain 2018