Tesrex maps users, devices, private apps, SaaS paths, Cisco Secure Client use and firewall VPN dependencies before the access path changes. Cisco Secure Access is often the strongest path for broad modernisation. Microsoft Entra can lead for clientless web apps. Zscaler can remain the right answer where ZPA or Browser Access already does the job.
The estate decides which path should lead. Cisco Secure Access is often strongest for broad remote-access change. Microsoft Entra and Zscaler are not add-ons; either can lead when the access need points that way.
One migration workpack can still carry all three decisions.
Broad estate pathUse Cisco Secure Access when the estate needs a broad move from VPN-first access to ZTNA, SSE, Secure Client and VPNaaS, with ASA, Firepower and Cisco Secure Firewall Threat Defense dependencies brought into the plan.
Clientless web pathUse Microsoft Entra Application Proxy for browser-based on-premises web apps that need cloud-based clientless access. Assess Entra Private Access separately where Global Secure Access, the client, Quick Access, per-app access and Conditional Access give the stronger Microsoft path.
ZPA pathUse Zscaler Private Access where ZPA is already established, third-party or unmanaged-device access is the issue, or Browser Access is the better path for web apps and remote sessions.
Before anything changes, Tesrex separates live dependencies from platform choices. That keeps Cisco, Microsoft and Zscaler in their proper role, without asking one product to do the wrong job.
Separate platform decisions. One controlled migration.
Map users, devices, identity groups, private apps, protocols, app owners, Cisco Secure Client and AnyConnect use, ASA, Firepower and Secure Firewall dependencies.
Decide which path owns each access need: Cisco Secure Access for broad modernisation, Microsoft Entra for suitable web apps, or Zscaler where ZPA or Browser Access is stronger.
Separate quick moves, candidates needing proof, exceptions needing fallback, and controls that must stay in place.
Track user experience, policy hits, support tickets, fallback points and ownership until handover is clean.
The map separates live access evidence, Cisco Secure Access suitability, Microsoft Entra clientless and Private Access candidates, Zscaler/ZPA paths, and the firewall and VPN controls needed for fallback.
One migration workpack can carry separate platform decisions without making one platform mandatory for the others.
The same view shows dependencies, suitable platform paths, clientless candidates, exceptions, fallback and the phased migration workpack.
Engineer detail. Leadership decision.
We will map Cisco Secure Access candidates, Microsoft clientless web-app paths, Zscaler path checks, Secure Client paths and firewall and VPN dependencies into one phased workpack.
