What is Zero Trust Security?

Zero Trust - the idea that all access to corporate resources should be restricted until the user has proven their identity and access permissions, and the device has passed a security profile check, a core concept for Okta.

[beto.aveiga]

Is this Zero Trust? I thought Zero Trust was isolating network and services, and only provide minimal access between them to avoid one insecure component became an open door for the rest of the system.