Trace Id is missing
Skip to main content

AI Anomaly Detector

Foresee problems before they occur with an Azure AI anomaly detection service.


Get 20,000 transactions S0 tier free every month for 12 months.

Boost reliability for your business by detecting problems early

Easily embed time-series anomaly detection capabilities into your apps to help users identify problems quickly. AI Anomaly Detector ingests time-series data of all types and selects the best anomaly detection algorithm for your data to ensure high accuracy. Detect spikes, dips, deviations from cyclic patterns, and trend changes through both univariate and multivariate APIs. Customize the service to detect any level of anomaly. Deploy the anomaly detection service where you need it—in the cloud or at the intelligent edge.

Get helpful resources to learn how to build AI solutions in 30 days.
Powerful inference engine assesses your time-series dataset and automatically selects the right anomaly detection algorithm to maximize accuracy for your scenario.
Automatic detection eliminates the need for labeled training data to help you save time and stay focused on fixing problems as soon as they surface.
Customizable settings let you fine-tune sensitivity to potential anomalies based on the risk profile of your business.

Speed your time to insights

Fast-track your problem solving with simple setup in the Azure portal and real-time anomaly detection systems. All it takes is three lines of code.

A graph showing boundary, value and expected values for a data set
A graph showing temperature, pressure, vibration and velocity for a data set

Identify multivariate anomalies

Use multivariate anomaly detection to evaluate multiple signals and the correlations between them to find sudden changes in data patterns before they affect your business.

A hand using a tablet displaying 8 graphs

Detect problems for virtually any scenario

There are many types of time-series data, and no one algorithm fits them all. AI Anomaly Detector assesses your time-series data set and automatically selects the best algorithm and the best anomaly detection techniques from the model gallery. Use the service to ensure high accuracy for scenarios including monitoring IoT device traffic, managing fraud, and responding to changing markets.

Microsoft Azure, Windows, Office and Bing logos

Trusted by Microsoft Azure, Office, Windows, and Bing

Monitor your product and service health and deliver reliable customer experiences using the same anomaly detection system and service that more than 200 Microsoft product teams rely on.

Comprehensive security and compliance, built in

Get started with an Azure free account


Start free. Get USD$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.

Documentation and resources

Get started

Read our documentation.

Learn how it works

Watch this episode of the AI Show on Channel 9 for a guided walkthrough on setting up AI Anomaly Detector.

Frequently asked questions about AI Anomaly Detector

  • Please see regional availability of univariate anomaly detection feature. Multivariate anomaly detection (preview) feature is available in selected regions. Please check this document for details.

  • AI Anomaly Detector provides a 99.9 percent service-level agreement (SLA).

  • AI Anomaly Detector is comprised of simple REST APIs with a code-first experience. It's the core engine of Metrics Advisor that detects anomalies in time-series data. It's best applied for ad-hoc data analysis, and it can be run in containers. Metrics Advisor has additional time-series monitoring features, with pipeline APIs and a built-in user interface for managing the service. It's designed for live-streaming data and AI analytics, and it supports deploying in Azure.

  • It can vary depending on the level of accuracy and speed desired for your scenario. Read the best practices guide for more details.

Start building with AI Services

Try AI Anomaly Detector free