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

 

Comparison Buyer's Guide

Executive SummaryUpdated on Aug 11, 2025

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
25th
Average Rating
7.6
Reviews Sentiment
7.2
Number of Reviews
12
Ranking in other categories
Log Management (20th), Search as a Service (3rd)
Splunk ITSI (IT Service Int...
Ranking in Application Performance Monitoring (APM) and Observability
10th
Average Rating
8.2
Reviews Sentiment
7.0
Number of Reviews
51
Ranking in other categories
IT Alerting and Incident Management (3rd)
 

Mindshare comparison

As of October 2025, in the Application Performance Monitoring (APM) and Observability category, the mindshare of Amazon OpenSearch Service is 2.0%, up from 0.6% compared to the previous year. The mindshare of Splunk ITSI (IT Service Intelligence) is 0.7%, down from 0.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Application Performance Monitoring (APM) and Observability Market Share Distribution
ProductMarket Share (%)
Splunk ITSI (IT Service Intelligence)0.7%
Amazon OpenSearch Service2.0%
Other97.3%
Application Performance Monitoring (APM) and Observability
 

Featured Reviews

Johnny Suleiman - PeerSpot reviewer
Scalability is a key feature as it allows easy scaling of the platform without downtime
OpenSearch is used as a search engine for specific logs, mainly in e-commerce and monitoring the logs themselves. It is very valuable for e-commerce, enabling data analysis on application logs and customer behavior, and can be integrated with other services, including AI and machine learning…
Ahmed Naguib - PeerSpot reviewer
Identifying complex diagnostics and alert management improvements needed
The best features of Splunk ITSI (IT Service Intelligence) are the APM, the Application Performance Monitoring, and the diagnostic capabilities. It is state-of-the-art. The intelligent alerting in Splunk ITSI (IT Service Intelligence) is very good. The predictive analysis can give you proactive information about potential bottlenecks that can occur on applications, desk, storage, SQL servers, databases, or other systems. It is very effective. The customizable dashboards in Splunk ITSI (IT Service Intelligence) facilitate our customers because they are highly adaptable. We have multiple types of dashboards, depending on who will be utilizing them, such as engineering, middle management, IT heads, or NOC teams that will be monitoring systems. The metrics I rely on for monitoring in Splunk ITSI (IT Service Intelligence) depend on what kind of asset or CI we are monitoring. For applications, we have the number of concurrent transactions, response time from the database, and write time on the desk. There are multiple parameters and metrics that we utilize in the monitoring part within ITSI.

Quotes from Members

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

Pros

"It's a good log management platform. In terms of infrastructure management, it's good."
"I would definitely recommend Amazon OpenSearch Service to other professionals due to its fast and reliable search capabilities."
"Amazon OpenSearch Service provides a managed database solution, so we don't need to manage everything ourselves."
"Our customers have seen tangible benefits from Amazon OpenSearch Service, especially in terms of their applications running smoothly, so they do get a return on investment."
"It enables us to efficiently search and retrieve our event data, offering us a versatile approach to locate specific information within these logs."
"The initial set up is very easy...We really appreciate Amazon!"
"The business analytics capabilities are the most important feature it provides."
"Regarding valuable features of the solution, we found with the process, which we have used in both cases where we used the solution that while you're seeing the streaming of data, you can analyze in the initial phase what sort of data you are streaming and whether it is valuable."
"The best features of Splunk ITSI (IT Service Intelligence) are the APM, the Application Performance Monitoring, and the diagnostic capabilities; it is state-of-the-art."
"The service analyzer view and automatic creation of incidents are valuable."
"Having a structure on how to resolve incidents is the most valuable aspect."
"The search function is the most valuable. It includes regular expressions and wild card searches. We'll write searches using field and case-sensitive services and use all of these search types to write an alert condition. Splunk ITSI has another feature called Glass Table that offers a visual representation."
"The most valuable feature is event correlation, which ensures that only one ticket is generated per issue, eliminating duplicates and reducing noise from multiple alerts."
"Instant usability of gathered event metrics is available. We have metrics data from systems, and we can use that to instantly get system status and trends."
"The most valuable features are the agility, being able to ingest many data sources with no limitation on capacity."
"The most valuable feature of ITSI is the service KPIs. No other tool provides you with the same level of observability and enterprise security or the search and reporting applications."
 

Cons

"I want to see a new feature in Amazon Elasticsearch Service that allows users to create default filters for filtered levels."
"I would say that, basically, the configuration part is an area with a shortcoming...Some upgradation is required on the configuration side so that we can get to use it."
"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."
"There is a problem with the database. Amazon only provides the hosting to run our applications bias, but there is no option to manage the database within the Elasticsearch product."
"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."
"They can enhance data visualization."
"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."
"There should be entity conflict resolution, specifically regarding duplicate entities. There should be case sensitivity for various keys amongst entities, specifically host names. We need IT metrics-based indexes and more content packs. I know they are coming out with these features"
"After upgrading Splunk ITSI from version 4.11 to 4.13, the analyzer stopped finding values for KPS and services."
"Predictive analytics, in terms of preventing incidents before they occur, still needs time to mature."
"ITSI currently lacks the capability for automated response, mitigation, and remediation."
"The dashboard function inside the individual episodes, not at the ITSI Notable Event Aggregation Policy level but actually at the correlation search layer, is an area where improvements are required."
"If the product had some prebuilt machine learning features, it would add value to our use cases."
"When we check the service analyzer, and we have custom inputs, there are issues."
"The license cost is expensive."
 

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 is pretty expensive, but it gives you a decent insight into the data. It is easy to learn, and ITSI has a great interface. You can run those queries and pass the data. I"
"Splunk pricing is high."
"Pricing has some room for improvement."
"The pricing of Splunk is a bit high."
"I wouldn't say there's been an issue with the solution's pricing because we went through the AWS marketplace and negotiated directly with Splunk."
"Splunk ITSI is expensive."
"Splunk ITSI is an expensive tool, and we need to purchase the utility license."
"The licensing is based on data usage."
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Top Industries

By visitors reading reviews
Financial Services Firm
16%
Computer Software Company
12%
Manufacturing Company
10%
Government
8%
Financial Services Firm
18%
Manufacturing Company
10%
Computer Software Company
10%
Government
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business7
Midsize Enterprise2
Large Enterprise2
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise9
Large Enterprise32
 

Questions from the Community

What do you like most about Amazon OpenSearch Service?
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
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?
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 t...
What is your experience regarding pricing and costs for Splunk ITSI (IT Service Intelligence)?
Pricing can vary significantly based on the selected modules and deployment choices. Splunk ITSI tends to be more expensive compared to some open-source solutions.
What needs improvement with Splunk ITSI (IT Service Intelligence)?
Splunk ITSI (IT Service Intelligence) can be improved in terms of the service management function, which is the only drawback, and there are some limitations in terms of event correlation, specific...
 

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: September 2025.
869,952 professionals have used our research since 2012.