Zscaler vs. Cisco Umbrella: An Honest Comparison for 2025
Both tools dominate enterprise security shortlists. Neither was built for the way people actually work today. Here's what you need to know before you sign anything.
The Setup
Zscaler and Cisco Umbrella are two of the most recognized names in web security. If you're evaluating Secure Web Gateways or SSE platforms, you've probably already been pitched both. They show up on the same Gartner Magic Quadrant. They're on the same vendor shortlists. They're often the default recommendation from legacy-minded MSPs and resellers.
But they're quite different products — built on different architectures, serving different primary use cases, and breaking down in different ways. This comparison cuts through the marketing to show you where each one actually excels, where each one falls short, and what questions you should be asking before you commit.
Zscaler: What It Is
Zscaler Internet Access (ZIA) is a cloud-native Secure Web Gateway built on a proxy-based architecture. Traffic from your users flows to one of Zscaler's 150+ global enforcement nodes — called ZENs — where it's inspected, filtered, and sent on its way. The platform supports SSL inspection, URL filtering, advanced threat protection, cloud sandboxing, DLP, CASB, and ZTNA (via Zscaler Private Access).
Zscaler is the market share leader in SSE. It's a genuinely capable platform with deep feature coverage and solid threat intelligence.
Cisco Umbrella: What It Is
Cisco Umbrella is a cloud-delivered security platform that started as a DNS-layer filtering tool and has since expanded into a broader SSE/SWG offering. It blocks threats at the DNS and IP layer before a connection is even established, and layers on a Secure Web Gateway for full traffic inspection. It integrates natively with the broader Cisco stack — Duo, Meraki, Talos threat intelligence, SecureX.
Umbrella is particularly strong for organizations already deep in the Cisco ecosystem. It's easier to justify internally when you already have Cisco in the infrastructure conversation.
Architecture: How Each One Actually Works
This is the most important part of the comparison — and the part most articles skim over.
Zscaler routes your traffic through its proxy infrastructure. Every packet from a user goes to a ZEN node, gets inspected, and is forwarded to the destination. Zscaler has been clear that this isn't backhauling in the traditional sense — they have PoPs in 150+ locations and peer directly with major cloud providers. But the fundamental model is still: your traffic makes a stop in Zscaler's infrastructure before it reaches its destination.
Cisco Umbrella operates at two layers. At the DNS layer, it intercepts domain lookups and blocks malicious destinations before a connection is made — this is fast and low-friction. But DNS-layer security can't see inside encrypted traffic, which now represents the vast majority of web traffic. So for full SWG capabilities, Umbrella routes traffic through Cisco's PoPs for inline inspection — the same architectural bet as Zscaler.
Both are what security architects call a "security-as-an-intermediary" model: your traffic passes through the vendor's infrastructure to be inspected.
Where Zscaler Breaks Down
Zscaler's capabilities aren't in question. The friction is everywhere else.
Deployment is a multi-month commitment. Zscaler isn't a product you stand up in a week. Organizations routinely spend two to four months on rollout — especially global companies managing ZEN node selection across regions, policy configuration, and agent deployment at scale. Most mid-market teams need a dedicated admin — sometimes two — just to manage ongoing policy.
Remote users in distant regions feel it. The latency impact of routing through a ZEN node depends heavily on where your users are relative to Zscaler's nearest PoP. For distributed teams in Southeast Asia, Latin America, or Eastern Europe, that gap matters. Real-world performance testing has shown Zscaler adding 10–50ms of latency on average, with page load times nearly doubling in some enterprise deployments with SSL inspection enabled.
Pricing scales in ways that aren't obvious at signing. Zscaler's modular pricing means advanced capabilities — DLP, CASB, Browser Isolation, ZPA — are separate line items. By year two or three, organizations running the full stack are often looking at $250,000–$400,000 per year at 2,000 users, plus professional services from the initial rollout.
Every change is a project. The platform is powerful, but power comes with complexity. Security teams that came from simpler tooling often find themselves surprised by how much operational overhead Zscaler requires to maintain.
Where Cisco Umbrella Breaks Down
Umbrella's issues are structural and strategic.
DNS-layer security was never enough. Umbrella made its name blocking threats at the domain level — and it does that well. But the modern threat surface lives inside HTTPS traffic. DNS filtering sees the domain; it doesn't see what's inside the connection. The SWG layer that Cisco added to address this routes traffic through Cisco's PoPs, which introduces its own latency and complexity without solving the underlying architectural problem.
The DLP story is limited. Cisco's inline DLP capabilities are basic compared to Zscaler or dedicated DLP tools. For organizations with meaningful data protection requirements — finance, healthcare, legal — Umbrella's DLP often isn't enough.
Cisco moves slowly. This isn't a criticism of the product so much as the company. Feature development, support response times, licensing structure navigation — everything in the Cisco world moves at enterprise-vendor pace. For security teams trying to respond to a fast-moving threat landscape, that pace becomes a ceiling.
Umbrella Roaming Client hit end-of-life in April 2024. Organizations still running the legacy Roaming Client are now on an unsupported path and need to migrate.
Pricing: What to Actually Expect
Neither vendor publishes simple public pricing, but the field benchmarks are well-established:
Zscaler: ~$8–15/user/month for ZIA. Advanced bundles — adding CASB, DLP, Browser Isolation, ZPA — push the per-seat cost significantly higher. At 2,000 users with a full ZIA + ZPA + advanced DLP stack, total annual cost frequently lands in the $250,000–$400,000 range, before professional services.
Cisco Umbrella: ~$10–16/user/month for Secure Access SSE. Cost drivers include the Umbrella package tier (DNS-only vs. SIG vs. full SSE), Duo MFA licensing, and whether you're running ISE posture integration. Pricing complexity scales with how much of the Cisco stack you're running alongside it.
Both tools are enterprise-tier investments. Umbrella can be more affordable for organizations that only need DNS filtering, but the full SSE comparison closes that gap quickly.
Who Should Choose Zscaler
Zscaler makes the most sense for:
- Large enterprises with dedicated security engineering teams who can manage deployment complexity and ongoing policy administration
- Organizations with strong zero-trust mandates that need deep SSL inspection, granular DLP, and advanced threat sandboxing
- Companies with an existing security stack that integrates well with Zscaler's ecosystem (CrowdStrike, Okta, SentinelOne)
- Teams with a budget that can absorb the implementation cost and operational overhead
If you have the resources to run Zscaler well, it's a capable platform. The question is whether those resources are available — and whether you want to spend them here.
Who Should Choose Cisco Umbrella
Cisco Umbrella makes the most sense for:
- Cisco-first organizations already running Meraki, Duo, or ISE, where Umbrella's native integrations reduce friction
- Teams that primarily need DNS-layer protection and don't require deep inline DLP or advanced SSL inspection
- Organizations where Cisco's support model is already familiar and the overhead of navigating Cisco's licensing structure is already built into operations
If you're not already in the Cisco ecosystem, Umbrella is harder to justify on its own merits alone.
There's a Third Option
Most comparisons between Zscaler and Cisco Umbrella end with a verdict between the two. But there's a question worth asking before you decide: do you want to route your traffic through anyone's infrastructure?
Both Zscaler and Cisco Umbrella made the same architectural bet — that security enforcement belongs in the vendor's data center. That made sense when workforces sat inside offices on known networks. It makes less sense when your users are on laptops in coffee shops, home offices, and hotel rooms in six countries.
dope.security takes a different approach. The SWG agent runs directly on the device. Traffic gets inspected on the endpoint, then goes straight to wherever it's going — no intermediate stop in a third-party data center. This is what dope.security calls Fly Direct.
The practical results: lower latency for distributed users, no single point of failure, simpler architecture, and meaningfully better privacy — your traffic isn't flowing through someone else's infrastructure. Deployment takes minutes, not months. And pricing doesn't require a spreadsheet model to understand.
Neither Zscaler nor Cisco Umbrella can offer this. Their entire business model requires your traffic to flow through them. dope.security's doesn't.
The Verdict
Pick Zscaler if you have a large, well-resourced security team, a genuine zero-trust mandate, and the budget and operational bandwidth to deploy and maintain a complex platform. You'll get deep capability — if you can manage it.
Pick Cisco Umbrella if you're already committed to the Cisco ecosystem and primarily need solid DNS-layer security with a familiar support model. Know going in that you'll hit DLP and inspection limits.
Evaluate dope.security if your workforce is distributed, your IT team isn't a 10-person security operation, or you've already been burned by the deployment complexity or latency of legacy SWG vendors. The architecture is genuinely different — and for a lot of teams, that difference is the whole ballgame.
