Can I install this locally? Will it work without an internet connection? Is it fully open source? From what I can tell, the answer to all three questions is no.
Is it yet another example of vendor lock-in? Yes.
Is it yet another example of vendor lock-in? Yes.
For small/medium businesses, sometimes it's better just to let the experts do their thing and build on top of it...
It's more like a clever trap, first hit is free etc.
Will be interesting to follow this. I'm not db savvy so I don't mind leaving that job to someone else.
"Vendor lock-in" means that you're tied at a business-critical level to some proprietary technology _that you can't get anywhere else_.
If you rent Linux servers, Postgres databases, or even k8s setups from Azure, there's no shortage of alternative vendors willing to sell you compatible product should you tire of MS, and ideally you won't need to change much more than a few endpoints. However, if your entire user base lives in Azure AD, it's a very different story.