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Amazon OpenSearch Service vs Splunk ITSI (IT Service Intelligence) comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Feb 22, 2026

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

Amazon OpenSearch Service
Ranking in Application Performance Monitoring (APM) and Observability
21st
Average Rating
7.6
Reviews Sentiment
6.7
Number of Reviews
13
Ranking in other categories
Log Management (17th), Search as a Service (3rd)
Splunk ITSI (IT Service Int...
Ranking in Application Performance Monitoring (APM) and Observability
10th
Average Rating
8.4
Reviews Sentiment
6.6
Number of Reviews
64
Ranking in other categories
IT Alerting and Incident Management (4th)
 

Mindshare comparison

As of August 2026, in the Application Performance Monitoring (APM) and Observability category, the mindshare of Amazon OpenSearch Service is 0.9%, down from 2.1% compared to the previous year. The mindshare of Splunk ITSI (IT Service Intelligence) is 0.8%, up from 0.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Application Performance Monitoring (APM) and Observability Mindshare Distribution
ProductMindshare (%)
Splunk ITSI (IT Service Intelligence)0.8%
Amazon OpenSearch Service0.9%
Other98.3%
Application Performance Monitoring (APM) and Observability
 

Featured Reviews

Md. Shahariar Hossen - PeerSpot reviewer
Senior Software Engineer at Cefalo
Event tracking has become smoother and data analytics provide clear insights for user actions
Amazon OpenSearch Service is not providing the processing feature directly. From Amazon OpenSearch Service, we are actually maintaining the AWS SQS, the queue service, which is responsible for providing information about what data has to be modified. So using that SQS, we're actually providing it, but we're not directly using Amazon OpenSearch Service for keeping data to other data pipeline thing. So far we didn't use it for any machine learning purposes, but in future, we have plans to extend or implement this feature. Since AWS itself is secure and Amazon OpenSearch Service is a part of this entire ecosystem, it becomes much easier for security purposes. From the validation point of view, Amazon OpenSearch Service itself provides easy to communicate APIs and up-to-date documents, which is much beneficial. For example, if I'm missing anything, I can directly go and check the documentation. That is actually much easier. I would rate it as really good so far. It's much faster. For our local machine, we can also use a kind of replica of Amazon OpenSearch Service just for development purposes. That is another good feature. I would say for the encryption thing and also the user access control management, it's much faster. For some of these hashing algorithms, it also worked really well so far. To be honest, I didn't find any places where it can be improved. However, I think they could provide more abstraction. For example, still for searching, we have to write down the queries in a specific manner, such as for a specific JSON structure or in a specific way. Otherwise, they don't provide us the actual results. For at least this purpose, I think abstraction could be a bit easier or a bit improved. Other than that, right now there is the age of AI, so some kind of prompting could also work, but I'm not sure how it could be integrated. As a user, lower prices or reasonable pricing is always better. Those can be improved as well. However, it is good that most of the services including Amazon OpenSearch Service actually provide pay as you go pricing. So if there were a bit lower version or a bit less payment methodology, it might be much better.
DS
Senior Consultant at a consultancy with 10,001+ employees
Service health has been monitored and visual insights support proactive telecom operations
The installation process is the first aspect I dislike about Splunk ITSI (IT Service Intelligence). If you do not configure it correctly, you will encounter issues in the search head. Because we use a distributed environment where each component has its own specific roles, installation is critical and requires careful attention. Splunk ITSI (IT Service Intelligence) is built with many applications. It is a compressed file, and when you extract the Splunk ITSI (IT Service Intelligence) app, you receive approximately 19 apps. Some applications, add-ons, and packages must be installed on specific components. If you do not configure an application correctly, it will not work. Sometimes we encounter issues during installation because of this complexity. I believe the installation process should be more uniform, meaning it could be deployed across all components to avoid post-installation issues. Sometimes after installation, you receive errors, and users cannot access Splunk ITSI (IT Service Intelligence). We have experienced this type of issue due to installation errors. I believe there is currently room for improvement regarding scalability. When we create Glass Tables containing many searches, the Glass Tables sometimes fail due to memory constraints, and we receive error pages. Splunk ITSI (IT Service Intelligence) should have a lightweight version to address these concerns. I would rate current scalability as medium.

Quotes from Members

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

Pros

"The stability of the product is good."
"In case there is a failure, Elastic manages everything well, and there no major downtime."
"Amazon OpenSearch Service provides a managed database solution, so we don't need to manage everything ourselves."
"AWS has now made our life easy."
"Amazon OpenSearch Service has enhanced our organization's ability to store and search large amounts of data efficiently."
"It enables us to efficiently search and retrieve our event data, offering us a versatile approach to locate specific information within these logs."
"We retrieve historical data with just a click of a button to move it from cold to hot or warm because it's already stored in the backend storage"
"They have the good documentation in the help text and that is the reason the Amazon Elasticsearch is the perfect solution for the current market."
"One particularly useful feature of Splunk ITSI is the ability to create custom services."
"Alerts and episodes are valuable to me."
"One of the excellent features is the service analyzer, which is truly impressive."
"The best feature I found in Splunk ITSI (IT Service Intelligence) is the ability to organize raw data we receive in a very particular manner as per the client's requirement, including the device name and message body."
"Splunk ITSI helps us secure our environment by allowing us to create automatons that run when alerts are triggered."
"Splunk is not only a great product but also, as a company it really supports its users with the customer support program and all of the documentation they have available, all of the conventions that are arranged, meet the experts, case studies, use cases, and the YouTube channel."
"ITSI includes a feature called a glass table."
"Splunk's intuitive interface and scalability make it accessible to non-technical users, and its capacity to monitor every millisecond of data across multiple applications is truly impressive."
 

Cons

"It would be beneficial to have some level of customization available in the managed service, tailored to the specific use cases of the end users."
"The pricing aspect is a concern. The service is way too costly. For the past month, I used only 30 to 40 MB of data, and the cost was $500. AWS could improve pricing."
"In terms of data handling capabilities with Amazon OpenSearch Service, they can be complex and managing data in comparison to other SIM solutions is a major drawback, as it is very hard to handle the data."
"As a user, lower prices or reasonable pricing is always better."
"Amazon Elasticsearch can improve the bullion in the near search and the ease of integration with Kibana. Additionally, there could be more flexibility in the configuration and documentation."
"We faced documentation challenges during integration after migrating from Elasticsearch to Amazon OpenSearch Service. Better documentation on integration, query handling, and a more user-friendly UI could enhance the product."
"One improvement I would like to see is support for auto-scaling."
"I want to see a new feature in Amazon Elasticsearch Service that allows users to create default filters for filtered levels."
"One of the main downsides is the complexity of configuration and maintenance, especially when dealing with large-scale environments."
"We're using predictive analytics, and there are three or four algorithms. It would be helpful if this process were more standardized and scalable."
"Integration is the most critical area to improve in Splunk IT Service Intelligence (ITSI). It wasn't a great experience because you had to do a little back and forth to integrate the solution."
"Splunk ITSI (IT Service Intelligence) can be improved because there are some events that get missed in indexing, especially on the stats and AC stats."
"However, a minor disadvantage is that alerts must occur multiple times before incidents are created; for instance, if the same event occurs only once or twice, an incident may not be generated immediately, whereas repeated occurrences will lead to prompt incident creation."
"The biggest improvement area is making it open to developers. Right now, it is very closed. It can only be downloaded by people who have a license to and not everyone. If it is open to everybody, more people will use it."
"After upgrading Splunk ITSI from version 4.11 to 4.13, the analyzer stopped finding values for KPS and services."
"The cost of the license could be lower."
 

Pricing and Cost Advice

"The solution is not expensive, but priced averagely, I will say."
"You only pay for what you use."
"Compared to other cloud platforms, it is manageable and not very expensive."
"There is a community edition available and the price of the commercial offering is reasonable."
"Splunk ITSI is expensive."
"Splunk pricing is high."
"Splunk ITSI is expensive; however, with the appropriate use case, it justifies the cost."
"Pricing was pretty good, and it is possible to just add on the features we want."
"I know that it is expensive, but I do not think there is another solution that can do similar things for that price."
"Splunk ITSI is a pay-per-use service that is priced fairly based on the amount of data we use."
"Splunk ITSI is expensive."
"Splunk ITSI is a premium application and comes with a premium price tag."
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Top Industries

By visitors reading reviews
Financial Services Firm
16%
Manufacturing Company
10%
Computer Software Company
9%
Government
6%
Financial Services Firm
16%
Manufacturing Company
10%
Outsourcing Company
9%
Construction Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business7
Midsize Enterprise2
Large Enterprise4
By reviewers
Company SizeCount
Small Business17
Midsize Enterprise8
Large Enterprise46
 

Questions from the Community

What is your experience regarding pricing and costs for Amazon OpenSearch Service?
I would consider the pricing as a six based on how much data we are handling; if we handle minimal data, it's cheap, but for large data, it becomes costly. Our clients usually pay between $1,000 to...
What needs improvement with Amazon OpenSearch Service?
Amazon OpenSearch Service is not providing the processing feature directly. From Amazon OpenSearch Service, we are actually maintaining the AWS SQS, the queue service, which is responsible for prov...
What is your primary use case for Amazon OpenSearch Service?
Amazon OpenSearch Service is a user-friendly version of Elasticsearch, as per my understanding. I have been using it for our volunteer management system where around 5,000 to 6,000 users are using ...
What is your experience regarding pricing and costs for Splunk ITSI (IT Service Intelligence)?
From a pricing perspective, it is not that bad because we get it from a distributor and do not purchase it directly from Splunk. We get it from a distributor who gives the pricing to a partner and ...
What needs improvement with Splunk ITSI (IT Service Intelligence)?
In terms of improvements for Splunk ITSI (IT Service Intelligence), I would suggest adding more out-of-the-box plugins and adapters, especially as there is a high demand for observability and dashb...
What is your primary use case for Splunk ITSI (IT Service Intelligence)?
I use Splunk ITSI (IT Service Intelligence) as a manager of the managers, a tool sitting on top of all the other observability tools. It gets the alerts feed from all the sources such as Splunk Ent...
 

Also Known As

Amazon Elasticsearch Service
No data available
 

Overview

 

Sample Customers

VIDCOIN, Wyng, Yellow New Zealand, zipMoney, Cimri, Siemens, Unbabel
TransUnion, Cox Automotive, Carnival Cruises, Leidos, Econocom, National Ignition Factory, Entrust Datacard, Molina Healthcare, United States Census Bureau
Find out what your peers are saying about Amazon OpenSearch Service vs. Splunk ITSI (IT Service Intelligence) and other solutions. Updated: August 2026.
908,877 professionals have used our research since 2012.