It has a modest UI for end-users to handle self-service scenarios, and an app portal for OpenID Connect configured applications.
The backend is fully CLI based.
It is very robust and performant, built on Rust.
Yet very much in active development, so do not expect full parity with commercial alternatives at a feature level.
I run it to provision users for my home Linux devices and it supports offline login, my Homelab servers, and my self-hosted web applications through OIDC.
A nice 'one stop shop' for my purposes.
EDIT: Actually their comparison page might be a worthwhile read considering your question OP.

"Got any questions about propane?"
It has been decades, still have not gotten over it.
This is not just an issue in the Games industry.
I am always reminded of Steve Jobs' "The Lost Interview". In it he details how John Sculley took Apple's visionary tech innovation driven product culture and made "sales & marketing" the primary driver behind Apple. Almost leading to its total collapse. (Steve Jobs got re-hired to Apple shortly after that interview and turned it around.)
Any "manager" that believes they can effectively drive a technology driven company/department/team, without being an (active) engineer in heart and mind, will drive it into the ground.
And none of that, "I used to be a COBOL programmer for 2 years at the start of my career 40 years ago" malarkey. You lose the skills, you lose the mindset, you lose the ability to innovate in technology and will inevitably kill what you're selling with your "KPI's".