Datadog vs. Splunk: a side-by-side comparison for 2024

Better Stack Team
Updated on January 11, 2024

Datadog and Splunk are both tools used to collect, store, and analyze log data. Both are popular among businesses of all sizes, but they have some distinct differences.

Datadog is a monitoring and analytics platform that provides real-time visibility into the performance of applications, infrastructure, and services. It also includes features for alerting, dashboard, and data visualization. On the other hand, Splunk is a software platform that provides insights and intelligence from machine-generated data such as logs, events, and time-series data.

This article will compare the two products in detail and will evaluate factors such as real-time data analysis, scalability, cost, and ease of use to determine which tool is more suitable for your business.

Features overview

Feature Datadog Splunk
Deployment options ✓✓
Data sources ✓✓ ✓✓
Data visualization ✓✓
Real-time monitoring ✓✓
Search capabilities ✓✓
Machine learning ✓✓
Scalability ✓✓ ✓✓
Pricing (free plan) ✓✓
UI and UX ✓✓ ✓✓
Documentation and support ✓✓ ✓✓

✕ - does not support

✓ - partial support

✓✓ - full support

1. Deployment options - Splunk

Datadog is only available a SaaS solution, where the software is hosted and managed in the cloud while Splunk provides several deployment options including on-premise, cloud, and hybrid deployment options. Additionally, Splunk offers the ability to deploy to a virtual machine or containers.

Splunk wins this round for having more deployment options.

2. Data sources - Splunk


Datadog supports a wide variety of data sources. Some examples include:

  • Application and server logs: from various sources such as files, syslogs, and cloud providers.
  • Metrics: from various sources such as host-level metrics, cloud provider metrics, and application performance metrics.
  • Traces: from various sources such as distributed tracing, Application Performance Management (APM) and mobile apps, in order to provide end-to-end visibility into the performance of your applications.
  • Infrastructure: from infrastructure and cloud providers such as AWS, GCP, Azure, and Kubernetes.

These data sources can be collected and processed using the Datadog Agent, which is a small software package that can be installed on servers and applications.


Splunk, on the other hand, can also collect and process data from many sources such as:

  • Logs: from various sources such as files, syslogs, and cloud providers.
  • Metrics: from various sources such as host-level metrics, cloud provider metrics, and application performance metrics.
  • Traces: Splunk can collect and process traces, in order to provide end-to-end visibility into the performance of your applications.
  • Network data: from network devices such as routers, switches, and firewalls.
  • Security data: from sources such as intrusion detection systems (IDS), security information and event management (SIEM) systems, and network security devices.

These data sources can be collected and processed using Splunk forwarders, which are small software packages that can be installed on servers and applications. The forwarders send the data to a Splunk indexer, which processes and stores the data. Note that Splunk can work with structured, semi-structured, and unstructured data making it the more flexible of the two.

3. Data visualization - Datadog

Both Datadog and Splunk have options for visualizing data, but they differ in their focus and capabilities.


Datadog provides a range of chart types, including line charts, bar charts, area charts, scatter plots, and heatmaps, that you can use to visualize data. You can also group charts to create dashboards, giving you an overview of your entire infrastructure. You can customize the layout, add widgets, and configure alerts to be notified of changes in the data. The alerts can be sent via email, SMS, or other methods, and you can customize the thresholds and conditions that trigger the alerts.


Splunk is similar when it comes to these basic functionalities. It also offers the user the ability to create charts, graphs, maps, dashboards, as well as alerts.

The main difference between Datadog and Splunk in terms of visualization is that Datadog offers a variety of pre-built dashboards and visualizations for real-time monitoring, while Splunk doesn't. But it does have a range of visualization options and allows you to create custom visualizations.

Datadog wins this round for having pre-built dashboards and visualizations.

4. Real-time monitoring and alerting - Datadog

Both Datadog and Splunk provide a comprehensive set of features for real-time monitoring, including data collection, alerting, dashboards, and anomaly detection. These features allow you to monitor the performance and availability of your infrastructure, applications, and services in real time and quickly identify and resolve issues as they arise.

Datadog provides real-time visibility into the performance of your systems, with the ability to set up alerts and notifications. Splunk is more geared towards analyzing and searching through large volumes of data, but it does have some real-time capabilities.

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5. Search capabilities - Splunk

Both Datadog and Splunk use their own proprietary query languages to search and analyze data. These query languages are designed to be robust and flexible, allowing you to perform complex searches and aggregations on your data. Both platforms provide robust search capabilities that allow you to easily and quickly analyze and visualize your data.

In comparison, Splunk has a powerful search engine that allows you to quickly search through large volumes of data and find the information you need. It also provides advanced search capabilities, such as regular expressions and data transformation commands. Datadog has more limited search capabilities, but it does allow you to filter and group data in various ways.

6. Machine learning - Splunk

Datadog includes several machine learning features such as Anomaly Detection, which uses a combination of statistical modeling and machine learning algorithms to automatically identify patterns in your metrics data, and Forecasting, which uses historical data to predict future values. Additionally, Datadog allows you to use their own library of machine learning models, or even bring your own models using their API.

Splunk also has built-in machine learning capabilities, such as its Machine Learning Toolkit, which provides a wide range of algorithms and models that can be used to analyze and extract insights from data. Splunk also offers the ability to create custom machine learning models using Python and R, and the ability to deploy models in a production environment.

Overall, both Datadog and Splunk have ML capabilities, but Splunk is more suited for advanced machine learning and data analysis tasks, while Datadog is more focused on monitoring and anomaly detection.

7. Scalability - tie

Both Datadog and Splunk are highly scalable, with the ability to handle large amounts of data and handle increasing loads.

Datadog allows for horizontal scalability by adding more servers to your cluster, which allows for more data to be collected, stored and queried. Additionally, it offers auto-scaling capabilities in their SaaS option which automatically adjusts the number of hosts and resources to handle the load.

Splunk also allows for horizontal scalability by adding more indexers and forwarders as the volume of data increases. Splunk also offers a feature called "Indexer Cluster" which allows multiple instances of splunk to share the load of indexing, search and query. As a result, Splunk is typically used for more complex and larger-scale log management and analysis needs.

8. Pricing - Datadog

Datadog and Splunk have different pricing models.


The cost of a Datadog subscription depends on the features and services you need, as well as the size of your infrastructure. For example, for the infrastructure monitoring service, Datadog offers a free tier, a pro tier that starts at $15 per host per month, and an enterprise tier that is $23 per host per month. Datadog also offers log management starting at $0.10 per GB per month and APM at $31 per host per month.


Splunk also offers different prices for different solutions. Its observability solution starts at $15 per host per month. For the other products such as the Splunk Cloud Platform and the Splunk Enterprise Platform, you must contact Splunk for detailed pricing.

Datadog wins for having a free plan, but both options can get expensive really quickly.

9. UI and UX - tie


Datadog is packed with various visualization and customization features, as well as dashboards where you can customize the layout and add widgets to the dashboards to display different types of data.


Splunk aims to provide an intuitive and easy-to-use interface that helps users quickly and efficiently find the information they need.

Its user interface consists of several key components, such as a navigation menu, which provides access to various features and tools within the Splunk platform; a dashboard that displays a customizable set of panels that display data and visualization in real-time; a results panel that shows the results of a search query, including data tables and charts, and so on.

Datadog and Splunk have user-friendly interfaces but differ in their focus and capabilities. Datadog has a more streamlined interface focused on real-time monitoring, while Splunk has a more robust interface geared toward data analysis and search.

10. Documentation and support - tie

Both Datadog and Splunk provide extensive documentation on their platforms, including guides, tutorials, and API references. Datadog's documentation is organized around specific product areas, while Splunk's documentation is organized by task.

Both companies offer a variety of support options, including online resources, community forums, and premium support plans. Datadog offers a range of support plans, including a free community support plan and paid plans with various levels of support. Splunk offers a range of support options, including a free community support plan and paid plans with various levels of support and access to advanced features.

Overall, both Datadog and Splunk offer a range of documentation and support resources to help users get the most out of their platforms.

Better Stack: the modern alternative to Datadog and Splunk

Better Stack is an observability platform that is able to collect, process and analyze data across your stack. It comes with two primary products: Logtail, which is for log management, and Better Uptime, which is for monitoring your applications and scheduled tasks and alerting you when something goes wrong.


Logtail is a log management tool that enables organizations to centralize, analyze and visualize their logs from various sources. It supports real time log collection from multiple sources, such as cloud platforms like AWS, GCP, and Azure, as well as servers, databases, and applications. The collected log records will automatically appear in the Live tail, which you can then save as a custom view.

One of the main features of Logtail is simplicity. It usually takes less than 5 minutes to connect to a new source and start collecting logs. It also includes data processing, shipping and alerting features, such as data compression, encryption, and shipping to different storage platforms. Additionally, it also has a feature that allows you to filter, search, and alert on logs in real-time.

Better Uptime

Better Uptime is a monitoring tool capable of monitoring the status of your applications, services, and scheduled tasks. It will notify you through email, SMS, phone call, Slack, or the mobile app when an incident occurs.

Some of its main features include application monitoring, scheduled tasks monitoring, infrastructure monitoring, incident management and alerting, status page, and so on.

Better Uptime also allows you to create on-call calendar for your team, assigning different team members to receive alerts at different times. This feature is also integrated with Google Calendar, allowing you to schedule on-call duties straight from your favorite calendar app.

The customizable escalation policy feature is available in Better Uptime as well. This feature allows you to define what happens when an incident occurs and the current on-call person fails to acknowledge it.

Both these products offer competitive prices, and both provide a free tier, allowing you to test the tools before paying. The paid plans start at $24 per month, and all payment plans come with a 60-day money-back guarantee.

Final thoughts

In this article, we compared Datadog and Splunk. Both are software platforms that provides a range of tools and features for monitoring, analyzing, and visualizing data.

Datadog is a cloud-based monitoring and analytics platform designed specifically for modern, distributed applications and infrastructure. It offers a range of tools for monitoring and analyzing data from various sources, including logs, metrics, and traces.

Splunk is a data analytics and visualization platform that is designed to help users search, analyze, and visualize data from various sources and applications.

Overall, Datadog is often used by developers, operations teams, and other technical users who need to monitor and troubleshoot distributed applications and infrastructure. Splunk is often used by business analysts, data scientists, and other non-technical users who need to search, analyze, and visualize data from various sources.

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