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Illumio vs Zscaler Internet Access comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Illumio
Average Rating
8.0
Reviews Sentiment
6.4
Number of Reviews
11
Ranking in other categories
Cloud and Data Center Security (7th), Cloud Workload Protection Platforms (CWPP) (15th), Microsegmentation Software (2nd)
Zscaler Internet Access
Average Rating
8.4
Reviews Sentiment
7.0
Number of Reviews
53
Ranking in other categories
Secure Web Gateways (SWG) (2nd), Internet Security (2nd)
 

Mindshare comparison

While both are Security Software solutions, they serve different purposes. Illumio is designed for Cloud and Data Center Security and holds a mindshare of 24.6%, up 23.2% compared to last year.
Zscaler Internet Access, on the other hand, focuses on Secure Web Gateways (SWG), holds 14.5% mindshare, down 17.0% since last year.
Cloud and Data Center Security
Secure Web Gateways (SWG)
 

Featured Reviews

Alark Singh - PeerSpot reviewer
Visual traffic interface aids in network micro-segmentation while a streamlined update option enhances process efficiency
The strongest aspect of Illumio is the visual traffic interface, which allows us to see all traffic that communicates with our servers and allied companies. We can write rules that can be embedded into the IP table, making it easy to handle. Illumio enables us to see network flows, traffic sources, and destinations. The policy generation and enforcement capabilities are valuable, allowing for selective enforcement. Illumio helps in audit purposes by saving data and showing blocked traffic, ensuring no outside traffic is allowed.
AshwaniTyagi - PeerSpot reviewer
Offers good reliability and availability to users
Sometimes, cost is one component that customers complain about, especially if they compare it with some of its competitors. Zscaler's pricing seems to be a bit on the higher side. I think the pricing model is also something that the tool can probably look into to optimize or improve for the customer so that it can be a competitive tool commercially. The solution's technical support needs to be improved, especially by offering a better support structure for different geographical areas.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"The solution helps to maintain logs and monitor activities. It also helps us with access management. The tool helps us to secure organizational data that include files."
"The product provides visibility into how the applications communicate and how the network protocols are being used."
"The Explorer allows you to know the traffic between source and destination."
"It has helped us to understand internal network visibility and firewall policy implementation. We use the product to simplify firewall policy implementation."
"The solution is easy to use."
"The dependency map is most valuable feature."
"The strongest aspect of Illumio is the visual traffic interface, which allows us to see all traffic that communicates with our servers and allied companies."
"The tool helps with my company's security posture."
"The initial setup is very straightforward."
"Zscaler Internet Access has helped us reduce the time that we spend managing security policies by about four hours a week. We can use this time to focus on other things, especially the IT team."
"The most valuable feature is bandwidth control."
"It is easy to set up the solution."
"The solution has reduced cyberattacks."
"The VPN is valuable, as the whole technology is very different from a traditional VPN."
"Zscaler excels in security protection and the cloud is always up-to-date. It does not matter if you are a small or big organisation, you will receive the same security quality."
"Zscaler Internet Access's best feature is the granular policy controls."
 

Cons

"The interaction we've had with the support team hasn't been ideal. Technical support should be improved."
"Some of the features that can be improved is offer additional guidance on creating an effective and risk-free tagging policy would be highly beneficial."
"There should be an option to upgrade from the console to the latest version instead of performing manual upgrades. This would be more helpful to streamline processes."
"I have not had the chance to experiment deeply with it."
"There should be an option to upgrade from the console to the latest version instead of performing manual upgrades."
"Illumio Adaptive Security Platform could improve by supporting more operating systems. For example, Cisco and Apache appliances."
"We need more details on areas where there is an error or a traffic blockage. I would like the tool to offer a more detailed view."
"The solution is very basic and doesn't do anything other than the orchestration of layer four endpoint firewall rules."
"Zscale is providing a proxy IP, and most government sites will block traffic from a proxy. Also, we see some performance issues on the cloud side during DC failover."
"The response time and engagement model for technical support could be improved to handle complex outages more efficiently."
"Cloud App’s database should be improved."
"Technical support could be better."
"In every cloud service in the world, you have multiple upstream internet providers to create diversity so that if one of your providers fails, your network just continues. In South Africa, there is only one upstream provider, and that's not right. That that's a problem."
"Zscaler does not provide dedicated IPs to each customer. Hence, they share a pool of IPs provided by Zscaler. There is a chance of blacklisting these IPs. I also do not like the multi-management portal."
"The interface for administration could be better. They should upgrade the management portal."
"The reporting functionality could be a bit easier to use. There is a reporting function, but it's quite hard to do any good reporting, from a user-management perspective. For example, if a department manager wants to know how his department is using the web, there is a way to get the data, but it's quite cumbersome to get it and show it well. And that's true for comparing between departments."
 

Pricing and Cost Advice

"The product's pricing is around 10,000-15,000 USD. The pricing is on a yearly basis."
"There is a subscription needed to use Illumio Adaptive Security Platform and we pay every three years. Overall the solution is expensive."
"Zscaler is transparent about its pricing model."
"Our monthly fee is around R3000."
"​Be aware that you will need to invest some time and money to adapt your environment for Zscaler (traffic redirection, software deployment, authentication, etc).​"
"The solution is a little bit expensive. On a scale of one to five, I would rate it as a three."
"Because it's a cloud solution, we pay on a yearly basis. It is affordable and includes tech support and all features."
"It is a few pounds per user per month."
"If we need any extra features, the price will increase."
"The price is competitive. It's not cheap and it's not expensive."
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Top Industries

By visitors reading reviews
Financial Services Firm
18%
Computer Software Company
14%
Manufacturing Company
8%
Government
6%
Computer Software Company
16%
Manufacturing Company
11%
Financial Services Firm
10%
Government
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What do you like most about Illumio Adaptive Security Platform?
The features that I have found most useful is the ability to centralize all the rules and then distribute them across various locations. However, I've encountered challenges related to tagging poli...
What is your experience regarding pricing and costs for Illumio Adaptive Security Platform?
I do not have specific knowledge about pricing details as it is handled by upper management. I know that Illumio is the cheapest solution in the security area.
What needs improvement with Illumio Adaptive Security Platform?
There should be an option to upgrade from the console to the latest version instead of performing manual upgrades. This would be more helpful to streamline processes.
Which is the better security solution - Cisco Umbrella or Zscaler?
Cisco Umbrella and Zscaler Internet Access are two broad-spectrum Internet security solutions that I have tried. Zscaler Internet Access is a good option for carrying out multiple security functi...
Which is better, Zscaler internet access or Netsckope CASB?
We researched Netskope but ultimately chose Zscaler. Netskope is a cloud access security broker that helps identify and manage cloud applications, protecting your sensitive data from exfiltration....
 

Also Known As

Illumio Adaptive Security Platform, Illumio ASP
ZIA
 

Overview

 

Sample Customers

Plantronics, NTT Innovation Institute Inc.
Ulster-Greene ARC, BanRegio, HDFC, Ralcorp Holdings Inc., British American Tobacco, Med America Billing Services Inc., Lanco Group, Aquafil, Telefonica, Swisscom, Brigade Group
Find out what your peers are saying about Akamai, SentinelOne, VMware and others in Cloud and Data Center Security. Updated: July 2025.
864,155 professionals have used our research since 2012.