Zero Trust Network Access, or ZTNA, has quickly moved from an emerging concept to a widely accepted security standard. Across the industry, there is strong agreement that the traditional perimeter-based model no longer reflects how modern organizations operate. Applications are no longer confined to a single network, and users are no longer working from a single location.
Yet despite this consensus, many small and mid-sized businesses, along with the managed service providers that support them, still face a fundamental challenge. They understand where they need to go, but they are unsure how to get there without introducing disruption, risk, or operational complexity.
For many, the idea of replacing a long-standing VPN infrastructure with a completely new access model feels like a leap that is too large to take all at once.
At Private Communications, we see this challenge consistently. The issue is not whether Zero Trust is the right goal. The issue is how to reach that goal in a way that aligns with real-world operational constraints. The answer is not a sudden transformation, but a structured and controlled progression. In other words, a Glide Path.
Why the Legacy Model Is Breaking Down
To understand why a new approach is necessary, it helps to look at how dramatically the environment has changed.
In the past, organizations operated within clearly defined boundaries. Applications lived inside the corporate network, and users accessed them from offices or through tightly controlled remote connections. The VPN extended that network perimeter outward, allowing remote users to connect back into the environment as if they were physically present.
That model worked when infrastructure was centralized and predictable.
Today, it is neither.
Applications are distributed across data centers, public cloud environments, and SaaS platforms. Employees work from home, from shared workspaces, and from mobile devices on unpredictable networks. Partners and contractors often require access to internal systems without ever setting foot inside an office.
The VPN, however, still operates on the same core assumption: once a user is connected, they are effectively inside the network.
This creates a significant security gap. When access is granted at the network level rather than the application level, users often receive far more access than they actually need. If credentials are compromised, attackers can move laterally across systems, escalating their reach and impact.
Compounding the problem is the increasing exposure of VPN infrastructure itself. SSL VPNs in particular have become a frequent target for attackers, with critical vulnerabilities continuing to emerge. These are not minor issues. They include remote code execution, session hijacking, and unauthorized access to internal environments. Because VPN gateways are exposed to the public internet by design, they present a highly attractive attack surface.
Security teams are left in a reactive posture, continuously patching and monitoring systems that remain inherently exposed.
It is no surprise, then, that Zero Trust has become the strategic direction. But the path to implementing it is where many organizations struggle.
The Problem with “Rip and Replace”
One of the biggest misconceptions about Zero Trust is that it requires a complete and immediate replacement of existing infrastructure.
For SMBs and MSPs, this perception creates real hesitation. A full cutover introduces multiple risks. It can disrupt user access, overwhelm IT teams, and create uncertainty around application dependencies that may not be fully understood.
In many environments, documentation is incomplete. Legacy systems may still be in use, and access patterns have evolved without being formally tracked. Attempting to redesign access controls without clear visibility can lead to misconfigurations, outages, and user frustration.
This is where many Zero Trust initiatives stall before they even begin.
What is needed instead is a method that allows organizations to improve security immediately while building toward Zero Trust in a controlled and incremental way.
A Three-Stage Glide Path
The Glide Path approach provides that method. Rather than forcing a binary switch from VPN to Zero Trust, it introduces a phased progression that aligns with how organizations actually operate.
Phase 1: Parallel Deployment with Modern Cloud VPN
The first step is not to remove the existing VPN, but to introduce a modern cloud-based alternative alongside it.
With Remote WorkForce, organizations can deploy a new access platform in parallel with their current environment. This means there is no immediate disruption to users, no forced migration, and no need to redesign access policies on day one.
This parallel deployment is critical. It gives IT teams the flexibility to begin adopting a new model without putting existing operations at risk. Users can continue connecting as they always have, while the new platform is introduced gradually.
At this stage, organizations begin to see immediate benefits in terms of performance, visibility, and manageability, without sacrificing stability.
Phase 2: Visibility and Controlled Migration
Once the platform is in place, the next phase focuses on gaining visibility into how the environment is actually being used.
One of the most significant challenges in moving to Zero Trust is understanding which applications users truly need. In many cases, access policies are based on assumptions rather than data.
Remote WorkForce addresses this by automatically discovering and cataloging resources as they are accessed. Applications, servers, and services are identified in real time, providing a clear picture of usage patterns across the organization.
This visibility transforms the migration process. Instead of attempting to define policies upfront, IT teams can observe actual behavior and build policies based on real-world usage.
At the same time, users and applications can be transitioned gradually. Some users may begin accessing specific applications through the new platform, while others remain on the VPN. There is no requirement to move everything at once.
This controlled migration reduces risk significantly. It allows organizations to validate configurations, adjust policies, and ensure continuity at every step.
Over time, reliance on the legacy VPN begins to diminish naturally.
Phase 3: Enforcing Zero Trust
With visibility established and migration underway, organizations are in a position to fully implement Zero Trust principles.
At this stage, access shifts from the network level to the application level. Users are granted access only to the specific resources they require, based on identity and context.
Systems that are not explicitly authorized become invisible to the user. This dramatically reduces the attack surface and eliminates the possibility of lateral movement within the network.
Because the groundwork has already been laid, this transition does not require a disruptive cutover. Policies are implemented based on known usage patterns, and users experience a seamless transition.
What once seemed like a complex and risky transformation becomes a natural progression.
Why This Approach Works
The effectiveness of the Glide Path lies in its alignment with real operational needs.
For business leaders, it provides a way to improve security without introducing unnecessary risk. Investments can be made incrementally, and progress can be measured over time.
For MSPs, it creates a manageable path to modern security. Instead of coordinating large-scale migrations, they can guide clients through a structured process that minimizes disruption and builds confidence at each stage.
For IT teams, it reduces the burden of uncertainty. Visibility replaces guesswork, and policies are informed by actual usage rather than assumptions.
And for end users, the experience remains consistent. In many cases, connectivity improves, while security enhancements occur behind the scenes.
A Practical Path Forward
Zero Trust is no longer optional. It is a necessary response to the realities of modern IT environments. But the way organizations adopt it matters.
Expecting SMBs to abandon their existing infrastructure overnight is not realistic. Successful security transformations are not defined by how quickly they happen, but by how effectively they balance progress with stability.
The Glide Path offers a practical alternative. By allowing organizations to deploy alongside existing systems, gain visibility, and transition gradually, it removes the barriers that have traditionally slowed Zero Trust adoption.
Instead of a disruptive leap, it becomes a controlled evolution.
For SMBs and MSPs alike, that difference is what makes Zero Trust achievable.