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

Why PeerSpot?

Amazon Web Services (AWS) and Splunk are both solutions in the Application Performance Monitoring (APM) and Observability category. Amazon Web Services (AWS) is ranked #21 with an average rating of 7.8, while Splunk is ranked #9 with an average rating of 8.6. Amazon Web Services (AWS) holds a 0.9% mindshare in APM, compared to Splunk’s 0.8% mindshare. Additionally, 92% of Amazon Web Services (AWS) users are willing to recommend the solution, compared to 98% of Splunk users who would recommend it.

Amazon OpenSearch Service

Read 13 Amazon OpenSearch Service reviews

8,392 Views
4,028 Comparison Views

92% willing to recommend

Splunk ITSI (IT Service Int...

Read 64 Splunk ITSI (IT Service Intelligence) reviews

6,598 Views
4,223 Comparison Views

98% willing to recommend

Amazon OpenSearch Service

Splunk ITSI (IT Service Int...

Comparison Buyer's Guide

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Executive SummaryUpdated on Feb 22, 2026

Amazon OpenSearch Service and Splunk ITSI compete in the domain of data management and analytics. Splunk ITSI appears to have the upper hand with its advanced observability and data correlation capabilities, providing superior incident management and predictive analytics.

Features: Amazon OpenSearch Service provides managed database solutions, fast search capabilities, and seamless AWS integration for business analytics. Splunk ITSI offers comprehensive data management with features like glass tables and predictive analytics, which aid in incident management and data visualizations.

Room for Improvement: Splunk ITSI users find its customization complex and expensive, seeking more out-of-the-box solutions and enhanced predictive analytics. Amazon OpenSearch Service could improve ease of configuration, flexibility in managed settings, and cost efficiency for handling large datasets.

Ease of Deployment and Customer Service: Amazon OpenSearch Service primarily supports public cloud deployments for scalability, while Splunk ITSI supports on-premises, public, and hybrid cloud environments. Splunk's customer support has mixed reviews, whereas OpenSearch benefits from AWS integration for smoother transitions, albeit with desired faster response times.

Pricing and ROI: Amazon OpenSearch Service is cost-effective for moderate use with a pay-per-use model, but costs can escalate with data volume. Splunk ITSI is priced higher due to its comprehensive feature set, offering quick ROI through its advanced analytics and incident management capabilities.

To learn more, read our detailed Amazon OpenSearch Service vs. Splunk ITSI (IT Service Intelligence) Report (Updated: September 2026).

Buyer's Guide

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

September 2026

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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

Ranking in other categories

Log Management (15th), Search as a Service (3rd)

Splunk ITSI (IT Service Int...

Ranking in Application Performance Monitoring (APM) and Observability

9th

Average Rating

8.4

Reviews Sentiment

6.6

Number of Reviews

Ranking in other categories

IT Alerting and Incident Management (4th)

Mindshare comparison

As of September 2026, in the Application Performance Monitoring (APM) and Observability category, the mindshare of Amazon OpenSearch Service is 0.9%, down from 2.0% compared to the previous year. The mindshare of Splunk ITSI (IT Service Intelligence) is 0.8%, up from 0.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Application Performance Monitoring (APM) and Observability Mindshare Distribution
Product	Mindshare (%)
Splunk ITSI (IT Service Intelligence)	0.8%
Amazon OpenSearch Service	0.9%
Other	98.3%

Application Performance Monitoring (APM) and Observability

Featured Reviews

Md. Shahariar Hossen

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.

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DhirendraSingh2

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.

Read full review

Quotes from Members

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

Pros

"Amazon OpenSearch Service provides a managed database solution, so we don't need to manage everything ourselves."

"In case there is a failure, Elastic manages everything well, and there no major downtime."

"AWS has now made our life easy."

"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."

"This service already sorts data like vectors. They have classified the storage pre-defined."

"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"

"I would definitely recommend Amazon OpenSearch Service to other professionals due to its fast and reliable search capabilities."

"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."

More Amazon OpenSearch Service pros

"I particularly like the preview feature because it provides a prompt experience for impact analysis."

"The data I got from Splunk ITSI (IT Service Intelligence) and the information provided by it is what I like most about the dashboarding and predictive features, and Splunk ITSI (IT Service Intelligence) made it easier for me to get data and to work on that, which has positively impacted my organization."

"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."

"Splunk ITSI can be easily integrated with the incident management platform. You can automate workflows and certain actions can be taken."

"ITSI includes a feature called a glass table."

"Real-time indexing in Splunk ITSI (IT Service Intelligence) has helped me by requiring me to take actions as soon as possible before the customer even notices the issue."

"The solution is easy to scale."

"What I like the most is the event correlations. It's a file structure, and ITSI has a correlation layer where you can normalize the events from different sources. Once these events are normalized, you set up rules to aggregate them into different or the same attributes. After the rules are defined, you can automate the process to solve the issue automatically."

More Splunk ITSI (IT Service Intelligence) pros

Cons

"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."

"The configuration should be more straightforward because we had to select a lot of things."

"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."

"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."

"As a user, lower prices or reasonable pricing is always better."

"The price is fair yet leans towards the expensive side. I'd rate it five out of ten with respect to capabilities vs. cost."

"One glaring issue was with our mapping configuration as the system accepted the data we posted, but after a few months, when we attempted complex queries, we realized the date formatting had become problematic."

More Amazon OpenSearch Service cons

"We're getting alerts with delays of maybe five minutes, however, we'd like to see real-time alerting in the future."

"We also faced challenges relating to UI development — being able to get the UI the way we wanted it to look performance-wise. Some of the customization levels of the UI just weren't there."

"The cost of the license could be lower."

"Splunk ITSI consumes a lot of CPU resources."

"I see areas for improvement in Splunk ITSI (IT Service Intelligence) such as cost, which is high."

"The UI could be updated. Some elements of the KPI section aren't where you'd expect. It looks like a website from 2010 or maybe older. You can't change some things, like if it doesn't word-wrap well. For example, if you have a long list of KPIs that exceed a character limit, you need to hover over them and wait for the HTML text to pop up to see which KPI it is."

"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."

"It would be advantageous to enhance the dashboard by incorporating sections for monitoring, service health, and a filter for the KPIs."

More Splunk ITSI (IT Service Intelligence) cons

Pricing and Cost Advice

"There is a community edition available and the price of the commercial offering is reasonable."

"The solution is not expensive, but priced averagely, I will say."

"Compared to other cloud platforms, it is manageable and not very expensive."

"You only pay for what you use."

"I know that it is expensive, but I do not think there is another solution that can do similar things for that price."

"The cost of the modules is a bit high for non-global companies, making it difficult for them to afford Splunk ITSI."

"The pricing of Splunk is a bit high."

"It is interesting. I am not involved that much lately, but if I recall correctly, you license primarily on the volume of data that you are using in Splunk ITSI, but there is no way Splunk can ever check if that is true, so that is interesting. We are not doing it, but someone can pretend to just use 10%, and it would be super cheap. It is tricky, but it is more tricky for Splunk than for us."

"Splunk ITSI is expensive."

"Splunk pricing is high."

"Pricing was pretty good, and it is possible to just add on the features we want."

"It depends on how big an organization is. If we have a lot of resources, the licensing needs to be upgraded. If we have a small environment, the licensing cost is definitely going to be less."

More Splunk ITSI (IT Service Intelligence) pricing and cost advice

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Top Industries

By visitors reading reviews

Financial Services Firm

15%

Manufacturing Company

10%

Computer Software Company

Comms Service Provider

Financial Services Firm

14%

Outsourcing Company

14%

Manufacturing Company

10%

Construction Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	7
Midsize Enterprise	2
Large Enterprise	4

By reviewers
Company Size	Count
Small Business	17
Midsize Enterprise	8
Large Enterprise	46

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...

See all answers

What needs improvement with Amazon OpenSearch Service?

See all answers

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 ...

See all answers

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 ...

See all answers

What needs improvement with Splunk ITSI (IT Service Intelligence)?

Training the database could make Splunk ITSI (IT Service Intelligence) even better for my work. I sometimes feel a lag with Splunk ITSI (IT Service Intelligence). I gave it a nine out of ten.

See all answers

What is your primary use case for Splunk ITSI (IT Service Intelligence)?

I have been using Splunk ITSI (IT Service Intelligence) for the last two to three years for my data handling. I do IT implementation with strong technical skills. I sometimes use Splunk ITSI (IT Se...

See all answers

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Product Reports

Buyer's Guide

Amazon OpenSearch Service

September 2026

Download Amazon OpenSearch Service product report

Buyer's Guide

Splunk ITSI (IT Service Intelligence)

August 2026

Splunk ITSI (IT Service Intelligence) report

Download Splunk ITSI (IT Service Intelligence) product report

Also Known As

Amazon Elasticsearch Service

No data available

Overview

Amazon OpenSearch Service provides scalable and reliable search capabilities with efficient data processing, supporting easy domain configuration and integration with numerous systems for enhanced performance.

Amazon OpenSearch Service offers advanced features for handling JSON, diverse search grammars, quick historical data retrieval, and ultra-warm storage. It also includes customizable dashboards and seamless tool integration for large enterprises. With its managed infrastructure, OpenSearch Service supports efficient system analysis and business analytics, improving overall performance and flexibility. Despite these features, areas like configuration complexity, lack of auto-scaling, and integration with Kibana require attention. Users seek enhanced documentation, better pricing options, and more flexible data handling. Desired improvements include default filters, mapping configuration, and alerting capabilities. Enhanced data visualization and Compute Optimizer Service integration are also recommended for future updates.

What features define Amazon OpenSearch Service?

Scalable Search: Offers reliable search capabilities across vast datasets.
JSON Handling: Supports efficient management of JSON data.
Ultra-warm Storage: Enables cost-effective historical data retrieval.
Dashboard Customization: Supports tool integration and tailored visuals.
System Upgrades: Allows for seamless infrastructure upgrades.

What benefits and ROI should users consider?

Performance Enhancement: Significant improvement in search and data retrieval.
Cost-Effectiveness: Provides a cloud-native solution optimized for AWS environments.
Comprehensive Analytics: Delivers detailed insights for business applications.

Amazon OpenSearch Service is utilized in various industries for log management, data storage, and search capabilities. It supports infrastructure and embedded management, analyzing logs from AWS Lambda, Kubernetes, and other services. Companies use it for application debugging, monitoring security and performance, and customer behavior analysis, integrating it with tools like DynamoDB and Snowflake for a cost-effective solution.

Amazon Web Services (AWS)

Splunk ITSI offers intelligent alerting, predictive analysis, customizable dashboards, and improves visibility and monitoring through Service Analyzer and Glass Tables. Event correlation enhances incident management, reducing alert fatigue, and improves mean time to resolution.

Splunk ITSI enables businesses to proactively monitor their IT environments by offering functionalities that reduce noise and provide enhanced visibility through sophisticated dashboards. Service Analyzer and Glass Tables facilitate the monitoring of KPIs, allowing for the prompt identification of potential issues. The platform's event correlation capabilities streamline incident management. Its scalability efficiently supports large data volumes, integrating diverse data resources while incorporating AI for predictive insights. Future improvements are sought in integration, documentation, and user-friendly interfaces, with an emphasis on simplifying configurations in expansive deployments.

What are the Key Features of Splunk ITSI?

Intelligent Alerting: Provides proactive monitoring and noise reduction.
Service Analyzer: Enables KPI monitoring and issue identification.
Glass Tables: Allows visual monitoring of crucial metrics.
Event Correlation: Simplifies incident management and reduces alert fatigue.
Scalability: Supports large data volumes and integrates vast data sources.

What Benefits and ROI can Users Expect from Splunk ITSI?

Proactive Monitoring: Enhances ability to foresee and mitigate IT issues.
Improved Resolution Time: Accelerates incident resolution and operational efficiency.
Enhanced Business Resilience: Strengthens IT operations through detailed insights.

Industries leverage Splunk ITSI to monitor infrastructure and applications effectively, employing its Service Analyzer and KPI models. Especially in sectors requiring stringent incident management and predictive analytics, integrations like ServiceNow enable visual health assessments and automated anomaly detection, positioning ITSI as a manager of managers by enhancing IT operations with comprehensive reporting and alert correlations.

Splunk

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

Buyer's Guide

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

September 2026

Free Report: Amazon OpenSearch Service vs. Splunk ITSI (IT Service Intelligence)

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