Google Zanzibar Isn't Flexible

Full disclosure: I'm the author and I work at Oso. We're an Authorization as a Service company that competes with products that are inspired by Zanzibar. So, my take is admittedly biased.

But for all Zanzibar's power, I've always found it curious that people call it flexible, and this post was my opportunity to sit down and work out why I don't agree.