What the fuck is even that?

You don’t want to know.

If you really want to know

Microsoft Dynamics 365 is an integrated suite of enterprise resource planning (ERP) and customer relationship management (CRM) applications offered by Microsoft. -Wikipedia

Microsoft Dynamics 365 - Wikipedia

Sadly not even the worst I’ve ever used as an end-user
Workday?
Qlikview
Try Epicor. Now that is a steaming pile.
God damn you. I had Epicor seared from my memory and now you reminded me that it exists
I don’t know what app you’re using, but that spoiler tag isn’t part of the spec.

Right, thank you for pointing it out!

I was using Eternity, but it seems to be no longer maintained, so I’m currently trying out some other alternatives.

Anyway, the comment should now be fixed.

The entire summary on Wikipedia is sales guy bullshit. It’s barely comprehensible.
I understand what they’re saying but I still don’t know what it means.
D365 ain’t really even that bad. It is just model driven power platform app. It is actually quite expandable, you can code it with plain javascript or more complex components on React. Backend is OData which is quite flexible.