Describe the Zero Trust Model and its principles related to cyber security, and its efforts to increase wide-ranging security posture of a network. How is it different than other architectures like Defense in Depth?

Zero Trust Architecture. How is it different from previous approaches to IT security? Describe the Zero Trust Model and its principles related to cyber security, and its efforts to increase wide-ranging security posture of a network. How is it different than other architectures like Defense in Depth?