Configure Azure Search

Last updated Friday, June 8, 2018 in Sitecore Experience Platform for Administrator, Developer

To use Azure Search with Sitecore you must first configure your Azure Search service with your Sitecore instance. Work through the following sections to configure your Azure Search service.

To create a Search service with Azure, work through the following instructions.

  1. Log in to the Azure portal, click More services, and create a Search service.
  2. In the Filter field, enter Search service and click Search services.

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  3. In the Search services window, click Add.

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  4. In the New Search Service window:
    • Specify the name of your Search Service instance.
    • Choose the type of subscription that suits you.
    • Choose the appropriate resource group, location, and pricing tier that suits you.


    Sitecore uses 15 search indexes, and therefore requires the S Standard pricing tier as a minimum. 

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  5. When the Search Service instance is configured, click Create.
  6. Open your newly created search service and click Settings, Keys.
  7. Copy the Primary admin key or the Secondary admin key to the apiKey parameter. It doesn't matter which key you choose to use, but the key will be used in the connection string.

Format the connection string

The default connection string name for Cloud Search is and it contains the following information:

  • serviceUrl – the HTTPS URL of the search service API (for example,
  • apiVersion – follows a date format, for example, 2015-02-28 (see more information on API versions).
  • apiKey – the admin key to the service that you obtain from the Azure management portal.


Sitecore 8.2-Update 3 and later requires API version 2015-02-28-Preview by default.

The connection string format is:

<add name="" connectionString="serviceUrl=<url>;apiVersion=<apiVersion>;apiKey=<apiKey>" /> 

Sitecore supports a Search service with geo-replicated scenarios. To use this type of scenario:

  1. Create two or more Search service instances.
  2. Add connection strings with a pipe separator (|). If you have two search services, for example, searchservice1 and searchservice2, and you want to use them in a geo-replicated scenario, you must use the following connection string:
    <add name="" connectionString="serviceUrl=;apiVersion=2015-02-28;apiKey=AdminKey1|serviceUrl=;apiVersion=2015-02-28;apiKey=AdminKey2" /> 

For advanced scaling scenarios, it is best practice to use a dedicated search service for your index. To set this up:

  1. Add a new connection string (for example,
  2. Configure the corresponding index with this connection string name:

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Set up configuration files

The Cloud search provider follows the same configuration pattern as Solr and Lucene and brings Azure-specific settings in a separate configuration file. From Sitecore 9.0 and later, you can use rule-based configuration to determine the search provider for your solution. To set up Azure Search, you must change the following setting in the web.config file:

<add key="search:define" value="Azure" />

Rebuild the indexes

You must rebuild the indexes to ensure Sitecore is fully operational.

To rebuild the indexes:

  1. Go to the Sitecore login page (http:// {your_instance}/sitecore/login) and log in with your admin credentials.
  2. On the Sitecore Launchpad, click Control Panel, and select Indexing manager.
  3. To select and rebuild all of the indexes, on the Indexing Manager page, click Select all, Rebuild.


    Rebuilding the index is a time consuming operation and can take 15 minutes or more.

    When the indexes are rebuilt, the Sitecore search indexes appear in the Search service window of the Azure Portal.

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Map the Azure field types

Azure Search uses the following Entity Data Model (EDM) field types. Refer to the table to ensure you map the field types correctly.

Field type



Optional: Text that can be tokenized for full-text search, for example, word-breaking, stemming, and so on.


A list of strings that can be tokenized for full-text search. There is no upper limit on the number of items in a collection, but remember that the 16 MB upper limit on payload size applies to collections.


Contains true or false values.


Contains 32-bit integer values.


Contains 64-bit integer values.


Uses double-precision numeric data.


The date and time values are represented in the OData V4 format, for example:




The precision of DateTime fields is limited to milliseconds. If you upload DateTime values that have submillisecond precision, the returned value will be rounded up to milliseconds, for example:

2015-04-15T10:30:09.7552052Z will be returned as:


To see how to define the different types of mapping between .Net and Sitecore, go to sitecore\contentsearch\indexConfigurations\defaultCloudIndexConfiguration\CloudTypeMapper, and open the Sitecore.ContentSearch.Azure.DefaultIndexConfiguration.config file.


You must define the map element for all custom fields like this:

<map type="<Field type>" cloudType="<Edm type from list of supported types>" /> 

Map fields

When listing all of the fields that the components use under the index configuration section, it is best practice that you list them as follows:

  • sitecore\contentSearch\configuration\indexes\index\configuration\fieldMap

The supported attributes are:




The name of the field, as defined for Lucene and Solr.


The field name as defined for Cloud. It can only contain letters, numbers, and underscores.


The first character must be a letter.


Use the boost attribute to give one field more importance than another.


You must configure this attribute for DateTime type fields. The supported value is yyyy-MM-ddTHH:mm:ss.fffZ.


The settingType property must be: Sitecore.ContentSearch.Azure.CloudSearchFieldConfiguration, Sitecore.ContentSearch.Azure

* searchable

Determines whether the full text search includes the specified field.

* retrievable

Determines whether the search results list includes the field value.

* facetable

Determines whether you can use the specified field in facet navigation.

* sortable

Use this to define whether the field can be used in the sort navigation structure.


Determines whether you can use the field in the 'filter' navigation structure.

* Applicable to Sitecore version 9.0.1 and later.

Support for Azure Search

Use the support reference for Azure Search to ensure that you configure query support and facet support correctly.

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