The Zero Trust Security model embraces the philosophy of trust nothing and verify everything, as opposed to traditional castle-and-moat models focused primarily on perimeter security. Least privilege access is at its core, requiring every single connection within a network to be authenticated and authorized before they are granted access to a system. This relies on governance policies for authorization. PAM is the utility that verifies the permissions for administrative users according to these policies. Without PAM, zero trust security would be difficult if not impossible. Read more.