Root of Trust is a foundational security concept in computing that ensures only verified and trusted software is allowed to run when a system starts up. It acts as a secure starting point for all security processes, typically using hardware or firmware components to validate the authenticity and integrity of system code. By establishing a Root of Trust, organizations can protect against malware and unauthorized access, as any unapproved changes to the system are detected before the operating system loads. This mechanism is essential for maintaining the overall security and reliability of computers, servers, and connected devices.