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HAProxy vs Istio comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Sep 9, 2024

Review summaries and opinions

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

ROI

Sentiment score
7.8
Companies favor HAProxy for cost-effective traffic management, saving on load balancers, and retaining customers annually with positive ROI.
Sentiment score
4.4
Istio improved connectivity, security, and monitoring, reducing downtime and operational overhead while enhancing reliability, deployment speed, and cost savings.
At first, I didn't see significant savings, but in the end, I realized that I didn't need as many tools since Istio already contains many aspects and features, which saved me a lot of time and probably money.
Using Istio in a banking environment provides excellent value by ensuring secure microservice communication and minimizing performance issues through traceability and other observability features.
 

Customer Service

Sentiment score
7.3
HAProxy's customer service has mixed reviews with suggestions for better documentation, though premium support is appreciated but inconsistent.
Sentiment score
3.5
Istio's support is community-driven with extensive resources, independent issue management, and optional paid support; engineer expertise is praised.
Responses are often received within 24 hours, which is fair given the free nature of the service.
 

Scalability Issues

Sentiment score
7.8
HAProxy scales efficiently, supporting diverse loads and thousands of users, adaptable for both small and large business needs.
Sentiment score
7.5
Istio excels in scalability with autoscaling and load balancing, rated highly by users, though large environments may require improvement.
Handling large-scale environments with proxies can strain resources, but horizontal scaling can improve fault tolerance.
I use AWS EKS with a cluster autoscaler, enabling automatic scaling based on load.
 

Stability Issues

Sentiment score
8.1
HAProxy is highly rated for stability and reliability, though some users occasionally face configuration and compatibility challenges.
Sentiment score
6.1
Istio is reliable and stable for moderate traffic, earning high ratings despite occasional bugs and configuration challenges.
The architecture, configuration, and resource management can impact stability.
I rate the stability of Istio as an eight or nine out of ten.
Istio has been stable in my experience.
 

Room For Improvement

HAProxy needs better pricing, monitoring, documentation, dashboard functionality, performance stability, and enhanced GUI and TCP session control.
Istio's complexity, scalability, and support challenges hinder usability, especially with new developments like Ambient Mesh and proxyless changes.
It would be beneficial if Istio offered paid support options, similar to AWS's enterprise support, to quickly resolve issues that might affect production.
Reducing the latency between the control plane and the data plane would be beneficial.
 

Setup Cost

HAProxy is free open-source software offering economic benefits, easy setup, and optional affordable extended features for integrated solutions.
Istio attracts enterprises with its open-source model, reducing costs by focusing expenses on necessary infrastructure and integrations.
Integration with observability tools like Prometheus, Grafana, and Elasticsearch incurs additional costs.
 

Valuable Features

HAProxy offers load balancing, security, customization, scalability, open-source benefits, and efficient traffic management with user-friendly setup and cost savings.
Istio offers load balancing, security, and monitoring features ideal for enterprise projects with easy integration and comprehensive documentation.
Istio provides excellent documentation and support, allowing for easy troubleshooting.
The security feature with mutual TLS authentication, which is identity-based, and the traffic management using cloud load balancers are very valuable.
 

Categories and Ranking

HAProxy
Ranking in Service Mesh
2nd
Average Rating
8.2
Reviews Sentiment
7.3
Number of Reviews
42
Ranking in other categories
Application Delivery Controllers (ADC) (4th)
Istio
Ranking in Service Mesh
1st
Average Rating
8.4
Reviews Sentiment
6.5
Number of Reviews
12
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of August 2025, in the Service Mesh category, the mindshare of HAProxy is 14.4%, up from 11.8% compared to the previous year. The mindshare of Istio is 20.5%, down from 20.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Service Mesh
 

Featured Reviews

Kaushlendra Singh - PeerSpot reviewer
Used for load balancing, but its dashboard and reporting could be improved
We use the solution for load balancing The solution's implementation and troubleshooting are not easy. The solution's dashboards and reports could be improved. I have been using HAProxy for 12 years. We didn’t face any issues with the solution’s stability. I rate the solution’s stability an…
JETTI DINESH REDDY - PeerSpot reviewer
Enhanced microservice security and advanced traffic management and good authentification
When our developers are building the microservices, instead of imposing additional burdens or additional thinking on them, especially as part of network features such as traffic management, security, or observability, we deploy something from the infrastructure side, so developers need only focus…
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Top Industries

By visitors reading reviews
Computer Software Company
18%
Financial Services Firm
11%
Comms Service Provider
9%
Government
7%
Financial Services Firm
15%
Computer Software Company
13%
Manufacturing Company
12%
Retailer
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

Do you recommend HAProxy?
I do recommend HAProxy for more simple applications or for companies with a low budget, since HAProxy is a free, open-source product. HAProxy is also a good choice for someone looking for a stable ...
What do you like most about HAProxy?
The solution is effective in managing our traffic.
What is your experience regarding pricing and costs for Istio?
Istio provides a significant saving for us in terms of costs since it is open source. However, Istio can still come at a price. It has a steep learning curve and might require more manpower hours ...
What do you like most about Istio?
We use Istio for Service Discovery and routing traffic.
What needs improvement with Istio?
I do not see much room for improvement in Istio for my project as it currently fits my needs perfectly. It would be beneficial if Istio offered paid support options, similar to AWS's enterprise sup...
 

Comparisons

 

Also Known As

HAProxy Community Edition, HAProxy Enterprise Edition, HAPEE
No data available
 

Overview

 

Sample Customers

Booking.com, GitHub, Reddit, StackOverflow, Tumblr, Vimeo, Yelp
Information Not Available
Find out what your peers are saying about HAProxy vs. Istio and other solutions. Updated: July 2025.
865,295 professionals have used our research since 2012.