(a)(1)(ii)(90) Agencies are responsible for determining their requirements and the best strategy for meeting those requirements. An agency's requirement is not overly restrictive of competition as long as the agency can show that its decisions are -
(A) Based on actual experience, engineering analysis, or similar rational bases; and
(B) Rationally related to ensuring its legitimate requirements will be met.
(91) To ensure that the Government's needs are met in the most effective manner, agencies must define their requirements in terms that -
(A) Take optimum advantage of distribution and support options, methods for assuring reliability, and other capabilities available in the marketplace that the agency determines appropriate for the type of item or service being acquired; and
(B) Exclude those items or services that cannot meet the agency's legitimate requirements.