Anti-tamper is a process that protects a system or device from unauthorized changes or modifications. It can also log and report any attempts to alter the system or device. The company is using anti-tamper to ensure the appliance is not altered from its original configured state. CI/CD, software assurance, and change management are not processes that specifically deal with unauthorized changes. Reference: https://www.acq.osd.mil/se/briefs/16943-DoD-AT-Overview-Brief.pdf