It refers to Zanzibar as a "graphical" system, which I think was the first thing that snagged me on this. Your post does too; I assume this is a language snag? "Graphical" doesn't connote "graph-based" in American idiom, but rather "visual".

I don't think your writeup really captures OPA vs. Zanzibar especially well either, for the reasons given by the SpiceDB person upthread. It just sort of defines away the problem Zanzibar is trying to solve, while claiming that Zanzibar-type systems aren't deployable at the edge --- which is pretty clearly not true?

Re: "Graphical" - I can see how that would have that effect :)

To be fair it doesn't really say that, it reads:"Graph-based authorization systems utilize a graphical representation to illustrate relationships between users and resources"

Still, I think Daniel (post author) could have picked better phrasing - I'll ask him to change it.

> "while claiming that Zanzibar-type systems aren't deployable at the edge" For most companies it's extremely impractical; and for a developer (Audience of this article) that simply wants to add performant permissions to their without embarking on a whole devops adventure it's as good as so.