What is on-premises Zero Trust?

It's applying the Zero Trust principle — never trust, always verify — to the systems you run yourself in your own data centre, rather than to cloud and SaaS. In practice that means microsegmenting your internal network so workloads don't blindly trust each other, giving users identity-verified least-privilege access to on-prem applications, and controlling privileged access. It brings modern Zero Trust protection to the servers, legacy apps and OT systems that remain on-premises.