The organization must disclose to the customer any use of subcontractors to process personal data before that use, with provisions included in the customer contract, disclosing that subcontracting is used and the names of the relevant subcontractors, the countries and international organizations to which they can transfer data, and the means by which they are obliged to meet or exceed the organization's own obligations, and where public disclosure of subcontractor information would increase security risk beyond acceptable limits, making the disclosure under a non disclosure agreement or on request while making the customer aware the information is available, the list of countries always being disclosed so the customer can inform the individuals concerned.
ISO 27701:2019 8.5.6 is one control. If you already hold one of the frameworks below, a reviewed crosswalk already says how much of ISO 27701:2019 your existing evidence covers. Hold SOC 2 and 58 of 108 ISO 27701:2019 controls already carry evidence.
Each report names every control your existing framework evidences, every one it does not, the reasoning behind each claim, and the claims that were argued against and rejected. 289 were rejected on the SOC 2 pair alone.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.