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HashiCorp Consul 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:
 

Categories and Ranking

HashiCorp Consul
Ranking in Service Mesh
8th
Average Rating
7.6
Reviews Sentiment
6.9
Number of Reviews
3
Ranking in other categories
No ranking in other categories
Istio
Ranking in Service Mesh
1st
Average Rating
8.2
Reviews Sentiment
7.6
Number of Reviews
11
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of May 2025, in the Service Mesh category, the mindshare of HashiCorp Consul is 5.3%, down from 6.1% compared to the previous year. The mindshare of Istio is 22.2%, up from 21.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Service Mesh
 

Featured Reviews

Phanindra Sangers - PeerSpot reviewer
Has an efficient key vault feature, but its integration capabilities need enhancement
I recommend HashiCorp Consul for beginners. It is a stable tool. The key-vault storage feature has significantly enhanced our configuration management process. We have maintained the secret software applications in the vault and retrieved the information from Kv. I rate the product a seven out of ten. It is good open-source software to be managed within the production.
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…

Quotes from Members

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

Pros

"The product's most valuable features are support for Service Mesh TLS and canary deployment."
"The documentation is good."
"HashiCorp Consul's most valuable feature is the automation of many processes, which limits the errors from user interaction."
"The initial setup is pretty straightforward."
"Istio makes all that much easier - traffic splits, percentage traffic splits, doing some sort of chaos testing to see how it works."
"We can implement load balancing to distribute traffic across multiple service instances. Istio also offers traffic routing capabilities and circuit-breaking functionality. For security, it handles authentication using mutual TLS (mTLS) between services. It can authorize services using JWT tokens. Istio also allows defining policies for rate limiting to control traffic within services."
"The most valuable features of Istio are the traffic management and the Sidecar they inject, which greatly helps secure the application."
"The security feature with mutual TLS authentication, which is identity-based, and the traffic management using cloud load balancers are very valuable."
"Istio provides tremendous value, particularly in offering TLS and authentication over microservice-to-microservice communication."
"Istio can save you time in terms of network troubleshooting."
"What I find particularly valuable about Istio is that it is free of cost."
 

Cons

"Health check outputs are delayed sometimes."
"The command line of HashiCorp Consul could be more intuitive to make it easier to use."
"They could improve issues related to triggering generic deployments for the platform."
"Istio needs to be more mature and user-friendly."
"I've seen applications where they had such strict time constraints, they couldn't use Istio because it was too much overhead."
"If you're a beginner in infrastructure management and networking, learning Istio might pose some challenges. However, if you have some knowledge of networking or service meshes, you should find it manageable. Istio's website offers documentation to guide you through learning."
"Based on my experience, the solution could be improved. They could simplify the learning process so that users can understand how its features work together, especially with components like Kibana. Learning about the different components is necessary. For instance, you need to understand the traffic flow, potential bottlenecks, and the architecture within Istio."
"Handling large-scale environments with proxies can strain resources, but horizontal scaling can improve fault tolerance."
"It would be good if the solution had more community forums."
"It would be beneficial if Istio offered paid support options, similar to AWS's enterprise support, to quickly resolve issues that might affect production."
"If someone doesn't understand Kubernetes, they'll have issues working with Istio."
 

Pricing and Cost Advice

"In case of budget constraints, we opt for the product's business support licenses and use an open-source version"
"You can deploy Istio free of cost and don't need to pay for it."
"It is on the less expensive side. It provides a significant saving for us in terms of cost and other things. It is open-source. We just download it from the open-source framework and use it."
"We use the tool's open-source version, so there are no hidden fees or additional costs associated with it."
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Top Industries

By visitors reading reviews
Financial Services Firm
26%
Computer Software Company
14%
Manufacturing Company
12%
Government
6%
Financial Services Firm
18%
Computer Software Company
17%
Manufacturing Company
11%
Retailer
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

Questions from the Community

What do you like most about HashiCorp Consul?
The product's most valuable features are support for Service Mesh TLS and canary deployment.
What needs improvement with HashiCorp Consul?
They could improve issues related to triggering generic deployments for the platform. We have raised multiple support cases. They could enhance the integration approach with Service Mesh tools. Add...
What advice do you have for others considering HashiCorp Consul?
I recommend HashiCorp Consul for beginners. It is a stable tool. The key-vault storage feature has significantly enhanced our configuration management process. We have maintained the secret softwar...
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

 

Overview

Find out what your peers are saying about HashiCorp Consul vs. Istio and other solutions. Updated: April 2025.
849,686 professionals have used our research since 2012.