Interim Authority to Operate
IATO (Interim Authority to Operate) is a temporary, time-limited ATO allowing a system to operate while completing full security assessment. Typically 90-180 days. Requires risk acceptance by the Authorizing Official.
(Interim Authority to Operate) is a certification concept federal contractors and grant writers run into across solicitations, regulations, and award filings
IATO is a federal-contracting certification or socio-economic status. Contractors qualifying under IATO can pursue opportunities specifically reserved for that category — but only after registration and verification through the relevant authority (SBA, VA, GSA, or the agency itself). The competitive advantage from a IATO certification is real, but conditional: it depends on the registration being current, the eligibility being maintained, and the work fitting within the certification's scope. Many small contractors leave IATO opportunities on the table because they assume the bar is too high or the administrative overhead too painful; in practice the largest barrier is usually the awareness gap, not the qualification gap. The related terms above name the adjacent certifications IATO most commonly stacks with.
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