I was reviewing the task order process flow. Could you please clarify if the CO/KO needs to provide NITAAC the award decision and obtain a NITAAC approval letter prior to issuing a task order?

NITAAC does not issue approval letters. Contractors can accept task orders as long as the task order award references the Prime Contractor’s NITAAC contract number (ex. HHSN2639999000###I).

FAQ Section: 
CIO-SP3 FAQs