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ATO (Authority to Operate)

FedRAMPFISMANIST

Formal federal authorisation that an information system may operate at an accepted level of risk.

An Authority to Operate is the formal management decision by a federal authorising official to authorise operation of an information system and explicitly accept the risk to organisational operations, assets, and individuals — based on the implementation of an agreed-upon set of security controls (NIST RMF).

Why it matters
Agency ATO is the cheaper of the two FedRAMP paths. Sponsoring an ATO with a single agency is often the practical entry point.

Related terms

FedRAMP
Standardised US government program for cloud-service authorisation, based on NIST 800-53.
FISMA
US law requiring federal agencies (and their contractors) to implement an information-security program based on NIST standards.
NIST SP 800-53
NIST catalogue of 1000+ security and privacy controls for federal information systems (Rev 5).

Does your program actually cover ATO (Authority to Operate)?

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