Bounded Context defines the scope of a domain model, i.e., it encompasses the business logic for a particular domain.
The inner core is assumed to remain consistent as long as the business use case does not change.
All outer layers are always assumed to change over time, i.e., they are only binding for the current point in time, e.g., when the technology used has reached its final stage of maturity and/or is overtaken by new innovations.
The interfaces/connectors define the interaction between the relevant (data, technology, business, etc.) layers of the domain model.