Why GAO Did This Study From September 2026 through December 14, 2026, GAO is seeking input and feedback on this exposure draft from all interested parties. Please use this link TEGuideComments@gao.gov to provide us with comments on the guide. Federal agencies spend billions of dollars each year buying commercially available off-the-shelf (COTS) products.
Testing and Evaluation Guide: Best Practices for Commercial Off-the-Shelf Systems (Exposure Draft)
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September 14, 2026
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government-accountability-office