DDD Authorization?

Question

Problem-Based Design

Hello. I'm trying to make Feng Shui authorization according to the canons of DDD. Vernon's book mentions that this can be done using a segregated core, a separate generic model with a limited context, or done on top of the domain layer, the responsibility layer.
Segregated core: there is not much information about this. As far as I understand, this is something like an intermediate model through which the core model is connected to the rest of the models in the domain and only through it?
Generic model: everything seems to be clear here. Authorization is needed - we go through this model, in which contexts are associated with the contexts of other models.
Responsibility Layer: it seems to me that doing another layer on top of the domain layer is overkill.
Maybe I'm missing something? But what are the advantages and disadvantages of each method?