Technology7 min read

Zero Trust Edge & SASE: Security Delivered from the Cloud

How a Secure Access Service Edge consolidates networking and security into a global cloud fabric — replacing hardware appliances with per-request, identity-aware access.

Published July 29, 2026Updated July 29, 2026

Zero Trust EdgeSASESSEZTNASWGCASBDLPFirewall as a ServiceCloud SecurityHybrid Work Security

The old security model trusted everything inside the corporate network. Hybrid work shattered that. A Zero Trust Edge — delivered as SASE (Secure Access Service Edge) — moves security to a global cloud fabric that every user and device connects through.

Consolidating the appliance sprawl

Instead of a patchwork of firewalls, VPN concentrators, and web filters, SASE unifies networking and security on one control plane delivered from the edge.

Capability	Role	Replaces
Secure Web Gateway (SWG)	Inspect & filter outbound web traffic	On-prem web proxy
DNS filtering	Block malicious domains at resolution	Separate DNS security appliance
ZTNA	Per-application access — no broad network exposure	VPN concentrator
CASB / DLP	Govern SaaS use and prevent data loss	Separate CASB platform
Firewall-as-a-Service	Cloud-delivered L3–7 policy	On-prem next-gen firewall

The Zero Trust principle

Every request is authenticated, authorized, and inspected — regardless of where it originates. Access is granted per-app, least-privilege, and continuously re-evaluated. No implicit trust based on network location.

Migration path: most organizations start by replacing VPN with ZTNA and adding DNS/web filtering, then progressively retire on-prem security boxes as they consolidate onto the edge. See our Cisco Secure Connect guide for a turnkey SASE implementation, and our Cisco Secure Access & Umbrella guide for the SSE layer in detail.

Download the IDENETY DNS & Edge Architecture reference: IDENETY DNS and Edge Architecture (PDF)

Contact our engineers to discuss a Zero Trust Edge or SASE deployment.