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Complementary subservice organization controls

Complementary subservice organization controls are controls a SOC report assumes a carved-out subservice organization operates for the criteria to be met.

Also called CSOC

They are listed in the system description under the carve-out method, such as physical security at a cloud provider's data centres. Because they are not tested in the report, the reader has to rely on the subservice organization's own assurance.

See carve-out method and subservice organization.

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Related terms

Complementary user entity controls
Complementary user entity controls are controls a SOC report assumes the service organization's customers operate themselves for the criteria to be met.
Subservice organization
A subservice organization is a vendor that performs part of the service a SOC report covers, such as a cloud hosting provider or a managed database service.
Carve-out method
The carve-out method is the way a SOC report treats a subservice organization by excluding its controls from scope and listing the controls assumed of it.

All glossary terms