Unstated Evaluation Criteria? Then pay the costs.
Empower AI challenged a decision by HHS to award to Booz Allen Hamilton. On protest, HHS agreed to corrective action. Empower AI requested protest costs, and GAO agreed that HHS should reimburse protest costs because HHS "failed to disclose the agency's preference for an AWS solution" and "the agency unduly delayed taking corrective action in response to a clearly meritorious protest allegation," though GAO did not agree with Empower AI's other challenges.