In what context was the concept of zero trust introduced? How to understand the concept of zero trust?

The background of the concept of zero trust is:

The increase of enterprise applications to the cloud, the network environment is becoming more and more complex, the frequent movement of enterprise personnel, the traditional firewall mechanism appears to be unable to cope with potential dangers such as external users accessing the public cloud services nakedly, and the connections between users, devices, applications, and IT resources in the network environment are being exposed to a high-risk environment. Based on these factors, the concept of zero trust is gradually coming out and being accepted.

Zero trust is advocating identity as a boundary as the basis of authority control, furthermore, is that zero trust that enterprises should not automatically trust any person, thing or thing internally or externally, should be in the authorization of the former through the dynamic and continuous identity authentication and assessment mechanism, the access to the main body of the network environment of people and equipment of the level of risk for scientific and accurate judgments, the use of least privilege access policy. Strict implementation of access control to enhance the trustworthy relationship between all network entity connections and increase enterprise security.

For example, the IDaas platform of Jade Helm Technology can realize the centralized integration of applications and the centralized control of personnel information in the login to support MFA and other security policies, which can be understood.