The v2 will allow us to extend our support to a plain binary as well as serverless containers (Knative et. al)
Keycloak is a great tool but definitely not has B2B features like user management for each business customer, self service and delegated access management as well as self service federation.
If you feel that I am mistaken, feel free to point out the docs to that ;-)
(See also: https://zitadel.com/blog/zitadel-vs-keycloak)
I might be misreading your post and/or the linked blog post, but I got the impression that both assume that different business customers will share the same KC realm and will only be divided by groups/roles/etc. Is that correct?
We use Keycloak in a multi-tenant scenario, so each new business customer spawns its own realm, meaning it can have a fully independent configuration (SSO, OAuth2 integration, 2FA, roles, etc.). While we provide a simplified UI in our product, a sufficiently technical customer can in principle be granted a realm-level administrator user to manage their own configuration.
Also Keycloak has a cutoff of around 400 ish realms last time I checked ;-)
I don't know abraae, but they seemed familiar with Keycloak.