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Uncover latent insights from all your content

Azure Cognitive Search is the only cloud search service with built-in AI capabilities that enrich all types of information to help you identify and explore relevant content at scale. Use cognitive skills for vision, language, and speech, or use custom machine learning models to uncover insights from all types of content. Azure Cognitive Search also offers semantic search capability, which uses advanced machine learning techniques to understand user intent and contextually rank the most relevant search results. Spend more time innovating and less time maintaining a complex cloud search solution.

Fully managed search as a service to reduce complexity and scale easily

Auto-complete, geospatial search, filtering, and faceting capabilities for a rich user experience

Built-in AI capabilities including OCR, key phrase extraction, and named entity recognition to unlock insights

Semantic search capability powered by deep learning models that understand user intent to surface and rank the most relevant search results

A Developer's Guide to Building AI-Driven Knowledge Mining Solutions

Learn how to use knowledge mining to extract structured data from your unstructured content—and discover actionable information across all of your organization’s data.

Developer resources


Go to the documentation overview to learn how to consolidate searchable content into a single fast index for a broad range of scenarios, and learn more about the Cognitive Search pipeline.

Learning modules and quickstarts

See how to extract and enrich content using AI-powered algorithms with Cognitive Search resources and sample data, learn how Cognitive Search enables knowledge mining, and use the knowledge mining solution accelerator.

Azure migration

Explore resources to migrate apps, data, and infrastructure at your own pace. Use assessment, migration, and cost management tools free as you transition your on-premises workloads to Azure Virtual Machines.

Community and Azure support

Ask questions and get support from Microsoft engineers and Azure community experts on Azure Experts on Azure Community Support, or contact Azure support.

Popular templates and labs

Discover video walkthroughs and popular quickstart templates for common configurations made by Microsoft and the community.

Start, maintain, and scale with minimal investment

Deploy a search index quickly and avoid operational maintenance. This fully managed cloud search service reduces the complexity of data ingestion and index creation by integrating with popular Azure storage solutions and offering index functionality exposed through a simple REST API or .NET SDK. Deploy a fully configured search service with intuitive user experiences such as scoring, faceting, suggestions, synonyms, and geo-search—all while avoiding the operational overhead needed to debug index corruption, monitor service availability, or manually scale during traffic fluctuations.

See how one customer saved months of upfront dev time setting up a search index

Create searchable content using integrated AI

Take advantage of Azure AI speech, vision, and language services to transform raw, unstructured information into searchable content. Easily orchestrate AI services that bring structure to your data before it’s indexed by defining your own Cognitive Search skillset. Applying AI capabilities such as OCR, translation, key phrase extraction, location, people, and organization detection is as simple as checking a box in the Cognitive Search portal.

Surface the most relevant results for your users based on search intent and not just keywords

Leverage tried-and-tested deep learning models from Microsoft Research and Bing to provide contextual and most relevant results in your apps. Using semantic search capability, you can understand the intent of what your customers are trying to search, offer significantly improved search results and drive deeper customer engagement. Semantic search also enables summary results so your users can get quick snippet without the need to go through results links and full documents.

Advanced data security and compliance

  • Protect your content from malicious acts with encryption built in throughout the entire indexing pipeline.
  • Maintain security with support for virtual networks.
  • Meet a broad set of international and industry-specific compliance standards.
  • Control per-user access to content through security filters.
  • Get multilayer Microsoft security across physical datacenters, infrastructure, and operations.

Get the power, control, and customization you need with flexible pricing

Azure Cognitive Search is available in combinable search units that include reliable storage and throughput to set up and scale a cloud search experience quickly and cost-effectively. Add search units to increase queries per second, to enable high availability, or for faster data ingestion. Remove search units during low traffic periods.

Kullanılamıyor Free Basic Standard Storage Optimized
Best for Estimating a projected index size and capacity planning. Running workloads requiring light compute and storage requirements. Most workloads, offering a balance of compute, memory, and storage. Running workloads with high volumes of data cost-effectively when you need less memory and compute.
Search unit Free Basic option S1, S2, and S3 options L1 and L2 options
Additional capabilities Document cracking: image extraction
AI enrichment

Get started with Azure Cognitive Search

Sign up for an Azure free account and create a Cognitive Search service.

Learn how to ingest and enrich data from a variety of sources.

Integrate search into new websites or chatbots, or add it to an existing application.

See how customers are using the cloud for sophisticated search

Delivering faster, deeper, more cost-effective data insights

Archive360, a digital archiving service, asks complex questions of petabyte-sized datasets quickly and cost-effectively.

Archive 360

Driving seamless search for millions of customers

Canadian vehicle search site uses Cognitive Search for its auction site, image search, and mobile and web search.

Auto Trader

Scaling your business effectively and reliably

Audioburst, an audio search startup, scales its voice-based content platform using Cognitive Search.


Improving productivity with smarter solutions

Contract management company Icertis reduced time in contract negotiations, lowered risk, improved contract compliance, and increased revenue by integrating Cognitive Search into its platform.


Eliminating manual processes to reduce time, error, and risk

Global engineering company Howden uses Cognitive Search to scale its technical review process to more quickly and accurately bid on incoming products.


Learn how partners are building intelligent search solutions

Frequently asked questions about Cognitive Search

  • Cognitive Search is available in more than 20 countries/regions worldwide, and new ones are being added regularly.
  • We guarantee at least 99.9 percent availability for paid tiers.
  • Built-in indexers are available for Azure Cosmos DB, Azure SQL Database, Azure Blob Storage, and Microsoft SQL Server hosted in an Azure Virtual Machine. Use Azure Data Factory, with more than 80 connectors, or Azure Logic Apps to connect to your data source. Alternatively, push data into a Cognitive Search index, which has no restrictions on data source type.
  • Cognitive Search works with several popular formats, including Microsoft Word, PowerPoint, and Excel; Adobe PDF; and PNG, RTF, JSON, HTML, and XML.
  • Cognitive Search is a platform as a service that helps developers create their own cloud search solutions. Microsoft Search uses Cognitive Search technology to offer software as a service for enterprise search within Microsoft products.
  • Cognitive Search is available in more than 50 languages.

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