Amazon OpenSearch Service vs Splunk Enterprise Security comparison

Amazon Web Services (AWS) and Splunk are both solutions in the Log Management category. Amazon Web Services (AWS) is ranked #22 with an average rating of 7.2, while Splunk is ranked #2 with an average rating of 8.3. Amazon Web Services (AWS) holds a 2.4% mindshare in Log Management, compared to Splunk’s 7.1% mindshare. Additionally, 92% of Amazon Web Services (AWS) users are willing to recommend the solution, compared to 94% of Splunk users who would recommend it.

Amazon OpenSearch Service

Read 13 Amazon OpenSearch Service reviews

4,952 Views
2,872 Comparison Views

92% willing to recommend

Splunk Enterprise Security

Read 375 Splunk Enterprise Security reviews

24,784 Views
13,383 Comparison Views

94% willing to recommend

Amazon OpenSearch Service

Splunk Enterprise Security

Comparison Buyer's Guide

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Executive SummaryUpdated on Nov 16, 2025

Splunk Enterprise Security and Amazon OpenSearch Service operate in the domains of IT security and data analytics. Splunk Enterprise Security tends to have the advantage due to its comprehensive security capabilities and threat intelligence, which make it appealing to larger organizations with extensive security needs. Amazon OpenSearch Service is favored for its scalability and cost-effectiveness in data retrieval and storage, making it attractive to users seeking efficient solutions.

Features: Splunk Enterprise Security features advanced threat intelligence, risk-based alerting, and integrates with the MITRE ATT&CK framework. It offers customizable dashboards and seamless data ingestion, supporting both on-premises and cloud environments, which is particularly beneficial for security-centric applications. Amazon OpenSearch Service excels in data retrieval efficiency, supports native JSON, and provides scalable storage options, focusing on cost-effective data analytics.

Room for Improvement: Splunk Enterprise Security could benefit from simplifying its operational workflows and improving its graphical user interface. It faces challenges with integration complexity, scalability, and high pricing models, particularly in multi-cloud environments. Amazon OpenSearch Service needs to improve its documentation, real-time analytics, and configuration flexibility. Enhancing auto-scaling, real-time monitoring, and cost management are also areas for potential growth.

Ease of Deployment and Customer Service: Splunk Enterprise Security supports diverse deployment environments but often requires significant technical expertise due to its complexity. Customer service experiences are mixed, with concerns about response times. Amazon OpenSearch Service simplifies public cloud deployments with its managed service model, though customization and integration remain challenging. Its customer support is generally reliable but could be improved in these areas.

Pricing and ROI: Splunk Enterprise Security is considered a premium solution, with costs linked to data ingestion volumes, providing high ROI through its extensive feature set. This model appeals to larger organizations with significant security investments. In contrast, Amazon OpenSearch Service employs a cost-effective, pay-as-you-go pricing strategy that is attractive to cost-sensitive users looking for scalable and efficient deployments without extensive security features.

To learn more, read our detailed Amazon OpenSearch Service vs. Splunk Enterprise Security Report (Updated: December 2025).

Buyer's Guide

Amazon OpenSearch Service vs. Splunk Enterprise Security

December 2025

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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 Log Management

22nd

Average Rating

7.6

Reviews Sentiment

6.7

Number of Reviews

Ranking in other categories

Application Performance Monitoring (APM) and Observability (26th), Search as a Service (3rd)

Splunk Enterprise Security

Ranking in Log Management

2nd

Average Rating

8.4

Reviews Sentiment

7.3

Number of Reviews

375

Ranking in other categories

Security Information and Event Management (SIEM) (1st), IT Operations Analytics (1st)

Mindshare comparison

As of January 2026, in the Log Management category, the mindshare of Amazon OpenSearch Service is 2.4%, up from 1.6% compared to the previous year. The mindshare of Splunk Enterprise Security is 7.1%, down from 8.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Log Management Market Share Distribution
Product	Market Share (%)
Splunk Enterprise Security	7.1%
Amazon OpenSearch Service	2.4%
Other	90.5%

Log Management

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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reviewer1469784

Senior Manager at a financial services firm with 10,001+ employees

Helps us detect cyber threats quickly and integrate multiple feeds effectively

Overall, the product is good, but when it comes to some infrastructure issues, we have to dig into more logs. There is no straightforward indication of an issue. Health check kind of dashboards are not available. More AI would help us, and more optimization, since security products run more queries. The AI module could suggest solutions, optimizing queries or workload balancing. If the product itself advises on running queries during peak times, it would be similar to what ChatGPT currently offers. We see quite a few issues on stability. Even last week, we faced something, and identifying bottlenecks is not easy. We need more SMEs, and there is no mechanism to tell us about indexer or search head issues. Self-monitoring dashboards could be beneficial. The technical support still requires more improvement. Often, primary support takes a lot of time and forwards most solutions to the engineering side. The primary support team has very limited knowledge to provide.

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Quotes from Members

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

Pros

"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"

"Amazon OpenSearch Service has enhanced our organization's ability to store and search large amounts of data efficiently."

"The most valuable features of Amazon Elasticsearch are ease of use, native JSON, and efficiency. Additionally, handles many use cases and search grammar was useful."

"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."

"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."

"It enables us to efficiently search and retrieve our event data, offering us a versatile approach to locate specific information within these logs."

"It's actually easier to collaborate since it is already deployed in the AWS cloud itself."

More Amazon OpenSearch Service pros

"The logs on the solution are excellent."

"The best part of Splunk Enterprise Security is its customizable settings."

"The ability to quickly search logs, performance data, and other inputs has helped tremendously with troubleshooting."

"If I need to integrate devices for logs, it is easier with Splunk. We can integrate different applications, network devices, and databases. It is also very rich in documents. It is the best."

"Splunk's strongest suit is its user interface. We can integrate multiple solutions and adjust settings in the Splunk interface."

"We solve issues that we previously could not since we now have the data."

"Splunk Enterprise Security's value lies in its ability to collect and analyze security logs, providing insightful dashboards."

"You can run reports against multiple devices at the same time. You are able to troubleshoot a single application on a thousand servers. You can do this with a single query, since it is very easy to do."

More Splunk Enterprise Security pros

Cons

"They can enhance data visualization."

"I want to see a new feature in Amazon Elasticsearch Service that allows users to create default filters for filtered levels."

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

"One improvement I would like to see is support for auto-scaling."

"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."

"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."

"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."

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

More Amazon OpenSearch Service cons

"We can only increase the environment. For instance, with an ES server, we cannot make a cluster of ES. If you have two servers and want to make a cluster of these two servers for ES, that is not possible."

"It works as intended for us, and we are getting everything that we need out of it. If anything, its initial setup can be improved a bit."

"Splunk Enterprise Security can improve in terms of probably being able to talk to additional sources."

"When files are absent, troubleshooting becomes difficult, and performance issues inevitably arise."

"The solution could improve by increasing the performance. We have run into problems when large amounts of data are processed."

"It takes time to train people."

"The user interface is the main area for improvement."

"The price has room for improvement."

More Splunk Enterprise Security cons

Pricing and Cost Advice

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

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

"You only pay for what you use."

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

"It can be tough to determine if you are getting all of the value out of your investment at times."

"Splunk has always been on the expensive side."

"Splunk is really expensive."

"Splunk Enterprise Security is priced lower than competitors."

"The price of Splunk Enterprise Security is high."

"Splunk is really expensive compared to all the other tools on the market, including Microsoft Sentinel."

"The pricing is based on the volume of data fed into it, which can lead to substantial costs. This pricing model is complex and unpredictable, making cost management difficult."

"The license for Splunk Enterprise Security is expensive."

More Splunk Enterprise Security pricing and cost advice

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Comparison Review

Vinod Shankar

Manager, Enterprise Risk Consulting at a tech company with 1,001-5,000 employees

Feb 26, 2015

HP ArcSight vs. IBM QRadar vs. McAfee Nitro vs. Splunk vs. RSA Security vs. LogRhythm

We at Infosecnirvana.com have done several posts on SIEM. After the Dummies Guide on SIEM, we are following it up with a SIEM Product Comparison – 101 deck. So, here it is for your viewing pleasure. Let me know what you think by posting your comments below. The key products compared here are…

Read full review

Top Industries

By visitors reading reviews

Financial Services Firm

15%

Computer Software Company

11%

Manufacturing Company

10%

Government

Financial Services Firm

13%

Computer Software Company

11%

Manufacturing Company

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	8
Midsize Enterprise	2
Large Enterprise	2

By reviewers
Company Size	Count
Small Business	109
Midsize Enterprise	50
Large Enterprise	264

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

See all answers

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?

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...

See all answers

What SOC product do you recommend?

For tools I’d recommend: -SIEM- LogRhythm -SOAR- Palo Alto XSOAR Doing commercial w/o both (or at least an XDR) is asking to miss details that are critical, and ending up a statistic. Also, rememb...

See all answers

What is a better choice, Splunk or Azure Sentinel?

It would really depend on (1) which logs you need to ingest and (2) what are your use cases Splunk is easy for ingestion of anything, but the charge per GB/Day Indexed and it gets expensive as log ...

See all answers

How does Splunk compare with Azure Monitor?

Splunk handles a high amount of data very well. We use Splunk to capture information and as an aggregator for monitoring information from different sources. Splunk is very good at alerting us if we...

See all answers

Comparisons

Grafana Loki vs Amazon OpenSearch Service

Compared 20% of the time

Datadog vs Amazon OpenSearch Service

Compared 7% of the time

Amazon CloudWatch vs Amazon OpenSearch Service

Compared 6% of the time

Xapien vs Amazon OpenSearch Service

Compared 5% of the time

Amazon Athena vs Amazon OpenSearch Service

Compared 4% of the time

More Amazon OpenSearch Service Competitors

IBM Security QRadar vs Splunk Enterprise Security

Compared 9% of the time

Wazuh vs Splunk Enterprise Security

Compared 5% of the time

Dynatrace vs Splunk Enterprise Security

Compared 4% of the time

Sentinel vs Splunk Enterprise Security

Compared 4% of the time

Datadog vs Splunk Enterprise Security

Compared 3% of the time

More Splunk Enterprise Security Competitors

Product Reports

Buyer's Guide

Amazon OpenSearch Service

January 2026

Download Amazon OpenSearch Service product report

Buyer's Guide

Splunk Enterprise Security

January 2026

Download Splunk Enterprise Security 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 Enterprise Security delivers powerful log management, rapid searches, and intuitive dashboards, enhancing real-time analytics and security measures. Its advanced machine learning and wide system compatibility streamline threat detection and incident response across diverse IT environments.

Splunk Enterprise Security stands out in security operations with robust features like comprehensive threat intelligence and seamless data integration. Its real-time analytics and customizable queries enable proactive threat analysis and efficient incident response. Integration with multiple third-party feeds allows detailed threat correlation and streamlined data visualization. Users find the intuitive UI and broad compatibility support efficient threat detection while reducing false positives. Despite its strengths, areas such as visualization capabilities and integration processes with cloud environments need enhancement. Users face a high learning curve, and improvements in automation, AI, documentation, and training are desired to maximize its potential.

What Are the Key Features of Splunk Enterprise Security?

Log Management: Efficiently manages and organizes a vast amount of logs for better data handling.
Rapid Data Search: Quickly retrieves relevant data for fast decision-making.
Flexible Dashboards: Customizable dashboards provide clear data visualization.
Comprehensive Threat Intelligence: Offers detailed insights to preemptively defend against threats.
Real-Time Analytics: Analyzes data in real-time to enhance response times.
Integration with Third-Party Feeds: Streamlines information flow from multiple sources.

What Benefits Should Users Investigate in Reviews?

Efficient Incident Response: Enhances the ability to respond promptly to threats.
False Positive Reduction: Minimizes incorrect threat alarms, making monitoring more efficient.
Threat Detection Speed: Accelerates the identification and evaluation of security threats.
Cost-Effectiveness: Potential savings through better licensing options and operational efficiency.
User Adaptability: Enhancements in documentation and training resources aid in overcoming the learning curve.

In specific industries like finance and healthcare, Splunk Enterprise Security is instrumental for log aggregation, SIEM functionalities, and compliance monitoring. Companies leverage its capabilities for proactive threat analysis and response, ensuring comprehensive security monitoring and integration with various tools for heightened operational intelligence.

Splunk

Sample Customers

VIDCOIN, Wyng, Yellow New Zealand, zipMoney, Cimri, Siemens, Unbabel

Splunk has more than 7,000 customers spread across over 90 countries. These customers include Telenor, UniCredit, ideeli, McKenney's, Tesco, and SurveyMonkey.

Buyer's Guide

Amazon OpenSearch Service vs. Splunk Enterprise Security

December 2025

Free Report: Amazon OpenSearch Service vs. Splunk Enterprise Security

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