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Azure Data Explorer

Analyze big data streams with a fast and powerful data exploration service to reduce time to insights

Extract key insights from all your data in just seconds

Azure Data Explorer is a fast, fully managed data analytics service for real-time and time-series analysis on large volumes of data streams from business activities, human operations, applications, websites, Internet of Things (IoT) devices, and other sources. Ask questions and iteratively explore data on the fly to improve services and products, enhance customer experiences, monitor devices, and boost operations. Quickly identify patterns, anomalies, and trends in your data. Explore new questions and get answers in minutes. Run as many queries as you need, thanks to the optimized cost structure.
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Activate the value in your data faster with real-time analytics in Microsoft Fabric, now generally available. Learn more

Fast and scalable full-text index and column store to provide powerful yet easy-to-use big data analytics and exploration

Kusto query language to spot patterns, trends, and anomalies in rapidly changing big data with T-SQL and Python query support

Fully integrated advanced query experience and real-time dashboards for seamless, scalable data visualization

Low-latency ingestion at scale with full data lifecycle management, autoscaling, and in-place data sharing across tenants  

Service capabilities

  • Scale to petabytes of streaming data with low-latency ingestion

    Elastically scale to terabytes of data in minutes. Azure Data Explorer offers fast, low-latency ingestion with linear scaling that supports up to 12 Mbps per core. Apply a wide range of data ingestion methods from devices, applications, servers, and services to your specific use cases.

  • Get fast read-only query with high concurrency

    Get results from 1 billion records in less than a second without modifying the data or metadata. Continue refining your queries until you’ve completed your analysis. Query large amounts of structured, semi-structured (JSON-like nested types), and unstructured (free-text) data. Search for specific text terms, locate events, and perform calculations on structured data. The intuitive query language uses Microsoft IntelliSense options and color coding to help you quickly spot patterns, trends, and anomalies. Simplify data exploration with fast text indexing, column store, and time-series operations all in one service.

  • Time-series analysis

    Create and analyze thousands of time series in seconds with near-real-time monitoring solutions and workflows. Azure Data Explorer includes native support for creation, manipulation, and analysis of multiple time series.

  • Take advantage of a fully managed data service

    Focus on data instead of infrastructure. This powerful, fully managed data analytics service automatically scales to meet your demands. Control costs by paying only for what you need, with no upfront costs or termination fees. Take advantage of global availability for massive scalability.

  • Use powerful queries over huge data

    Ask unlimited questions without skyrocketing costs; you pay by the hour, not by the query. You also control your storage costs. Get the best of a persistent database to automatically add data to the table, but with the flexibility to choose a retention policy based on how long you want to store the data. For persistent storage at commodity pricing, write data to Azure Blob Storage for future use.

  • Create custom solutions with built-in analytics

    Build your own solution with interactive big data analytics built in. Azure Data Explorer is the data exploration service for Azure MonitorAzure Time Series Insights, and Microsoft Defender . It supports REST API, MS-TDS, and Azure Resource Manager service endpoints and several client libraries.

Use cases

  • Reduce time to insights with IoT monitoring and analytics

    IoT devices generate billions of sensor readings. Normalizing and aggregating data typically requires multiple technologies, which slows analysis, complicates maintenance, and leads to reliability issues. Azure Data Explorer facilitates remote monitoring of manufacturing equipment, vehicles, and systems that continuously cycle through operations. Derive insights from large volumes of telemetry to ensure high performance and optimize machine quality. Use the data for notifications and to feed analysis tools to diagnose and treat problems.

  • Analyze petabytes of log streams in real time

    Publishers, ad networks, gaming sites, and other web-based businesses rely on large volumes of log data to spot trends, patterns, or anomalies in near-real time. With data exploration, discover insights that help you gain new customers, increase user engagement, and monetize traffic. Use this instant analysis of billions of lines of log data to generate personalized recommendations to visitors, predict which results and content suggestions they’re most likely to click on, and learn which content will lead to new subscriptions and purchases.

  • Ingest and analyze petabytes of data from SaaS applications

    Organizations are rapidly adopting software as a service (SaaS) applications for business transformation. Embed Azure Data Explorer in SaaS applications to ingest and analyze petabytes of data in real time. With this data, developers monitor service and improve application performance, while business users discover user trends, create personalized experiences, and develop new revenue streams

Comprehensive security and compliance, built in

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Start free. Get $200 credit to use within 30 days. While you have your credit, get free amounts of many of our most popular services, plus free amounts of 55+ other services that are always free.


After your credit, move to pay as you go to keep building with the same free services. Pay only if you use more than your free monthly amounts.


After 12 months, you'll keep getting 55+ always-free services—and still pay only for what you use beyond your free monthly amounts.

Customers already using Azure Data Explorer

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Frequently asked questions about Azure Data Explorer

  • Data Explorer is available in every Azure region. 

  • Data Explorer supports log analytics, time series analytics, geospatial, sequence, and advanced analytics using Python and the Python ecosystem. Regular relational analytics are also naturally supported. 

  • Yes. Many Microsoft analytics big data SaaS applications are built on Azure Data Explorer as a data platform. 

  • Azure Data Explorer is now available in Microsoft Fabric Preview as a part of Real-time Analytics.

  • Kusto query language is a modern query language for effective, innovative, and powerful data exploration and querying. 

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