Use Of External Information Systems | External Systems Have Agreements, v1.0

Defines conformance and assessment criteria for verifying that an organization requires approved agreements for use of external information systems.
If an assessment step references organization-defined elements (E.g. <organization-defined personnel or roles>, <organization-defined frequency>, etc.), corresponding citations/excerpts must be provided to confirm that the organization has established and documented these values and that they apply as referenced in the conformance criteria.

Similarly, if a "Selection" among multiple options (e.g. [Selection (one or more): as needed; ]) is specified, evidence must be provided to establish that the option(s) implemented by the organization have been defined and documented.

The assessment step shall not be marked as satisfied without this evidence.

Assessment Step

1
Use Of External Information Systems | External Systems Have Agreements (UseOfExternalInformationSystemsExternalSystemsHaveAgreements)
Does the organization permit authorized individuals to use an external information system to access the information system or to process, store, or transmit organization-controlled information only when the organization retain approved information system connection or processing agreements with the organizational entity hosting the external information system?
Artifact
A1
Provide evidence (e.g. organizational policies, procedures, compliance/assessment reports, etc.) that support the assessor's response to this assessment step.
If conformance criteria reference organization-defined elements (e.g. <organization-defined personnel or roles>, <organization-defined frequency>, etc.), these values must be defined and documented by the organization.

Similarly, if the criteria specify a "Selection" among multiple options (e.g. [Selection (one or more): as needed; ]), the option(s) implemented by the organization must also be defined and documented.

Conformance Criteria (1)

C1
The organization permits authorized individuals to use an external information system to access the information system or to process, store, or transmit organization-controlled information only when the organization retains approved information system connection or processing agreements with the organizational entity hosting the external information system.
Citation
SP800-53R4
Appendix F, AC-20 (2)