Virtual Desktop Infrastructure (VDI) was designed to deliver entire desktops from the data center. It excels at running legacy Windows applications, giving each user a persistent environment, and supporting power users who genuinely need a full operating system streamed to their screen.
But step back and look at what most "secure access" projects are actually trying to solve. In the overwhelming majority of cases, the risky activity is browsing: opening email links, logging into SaaS dashboards, downloading the occasional attachment. For that workload, shipping an entire virtual desktop is like renting a moving truck to carry a single grocery bag.
The Cost Problem Nobody Budgets For
VDI typically lands between 40 and 80 million rials per user per month once you add it all up: compute for full desktop virtualization, persistent storage, profile management, OS licensing, and—if any application needs it—dedicated GPU capacity. Then come the hidden costs: a specialized team to keep the farm healthy, golden-image maintenance, and the long tail of "my desktop is slow today" tickets.
For a team that only needs safe web access, every one of those line items is paying for capability you will never use.
Why Purpose-Built RBI Wins
Remote Browser Isolation (RBI) narrows the problem to exactly one thing—the browser session—and optimizes ruthlessly for it:
- Faster startup — A fresh isolated browser launches in seconds, not the minutes a desktop spin-up can take.
- Lighter resources — A per-session container uses a small fraction of the CPU and memory a full virtual desktop reserves, so a single host serves far more users.
- Browser-native policy — Domain allow/deny lists, file scanning, clipboard rules, and session recording are first-class controls, not bolt-ons.
- Lower total cost — Purpose-built architecture means you pay for browsing, not for an operating system you are not using.
The right tool for browser risk is a browser isolation platform—not a desktop virtualization platform wearing a browser costume.
What You Don't Give Up
A common worry is that a "lighter" tool must be a weaker one. With Dejanu the opposite is true for the threat that matters: because web code executes remotely and only pixels reach the device, a malicious page or drive-by download has nowhere to run on the endpoint. You also gain governance VDI rarely provides out of the box—per-session telemetry, domain visit logs, and optional recording that turns an audit from a scramble into an export.
When to Keep VDI
This is not an argument to rip out VDI. It still makes sense for power users running native applications, CAD and engineering tools, or legacy Windows software that has to live on a desktop. The smart strategy is to right-size: keep VDI for the users who need a desktop, and move the much larger population of web-only users to RBI.
The Bottom Line
Dejanu typically deploys in 7–30 days, compared with the 3–6 month rollouts common to VDI, and delivers measurable security outcomes from the first session. If your goal is to make browsing safe—not to operate a desktop fleet—RBI is simply the better-matched tool.