Zero Trust is a cybersecurity approach that fundamentally changes how organizations defend their digital environments. Unlike traditional security models that rely on a strong perimeter, Zero Trust operates on the principle that no user, device, or system should be trusted by default, whether inside or outside the network. Instead, every access request must be thoroughly verified, regardless of its origin. This model reflects the real-world understanding that threats can come from anywhere, including within organizational boundaries, and that internal networks are often just as vulnerable as external ones.