The term “zero trust” was coined by Forrester in 2010. The concept was central to the BeyondCorp architecture that Google was designing around the same time. Google provocatively stated that the corporate network was no more secure than the public Internet. Traditional security solutions provide minimal visibility outside the perimeter. Traditional firewalls, VPNs, web gateways, network access control, network data loss prevention, locked-down PCs have minimal value outside perimeter. This is a growing issue because all new enterprise application innovations happen in the cloud, not on-premises.”]
Source: https://www.darkreading.com/attacks-breaches/establishing-true-trust-in-a-zero-trust-world