Can you explain and give examples on the requirement in ISO 27001 standard, 4.3 (c) interfaces and dependencies between activities performed by the organization, and those that are performed by other organizations.
Interfaces are the limit points between what is inside the ISMS scope and what is out (e.g., a website page is an interface between organization's information systems and the external public, a loading area is an interface between a supplier and the organization, etc.).
Dependencies are relations between organization's elements (processes, assets, etc.) that are needed to achieve a defined outcome (e.g., a datacenter depends upon a communication provider to make information systems available).