Azure Network and Subnet pattern-based discovery

  • Release version: Yokohama
  • Updated June 17, 2026
  • 2 minutes to read
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    Summary of Azure Network and Subnet pattern-based discovery

    This pattern-based discovery enables ServiceNow customers to automatically identify and map Azure virtual networks, subnets, and virtual network peerings within their cloud environments. It populates the Configuration Management Database (CMDB) with detailed network-related information, enhancing visibility and management of Azure network components.

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    For optimal results, customers should ensure the Discovery and Service Mapping Patterns application is updated to the latest version from the ServiceNow Store and verify that Microsoft Azure discovery prerequisites are met. Special configuration is required to discover Azure GovCloud (US) accounts by using a datacenter URL during Azure service account setup.

    Key Features

    • Discovery of Azure Network Components: Identifies Azure virtual networks, subnets, and virtual network peerings and records their key attributes including Name/ID, Object ID, State, CIDR blocks, and Install Status in respective CMDB tables.
    • CMDB Population: Information is stored in specific tables:
      • Cloud Network [cmdbcinetwork]: Stores network-level details.
      • Cloud Subnet [cmdbcicloudsubnet]: Stores subnet-specific details.
      • Virtual Network Peering [cmdbcivnetpeering]: Stores peering relationships and gateway usage.
    • Relationship Mapping: Automatically creates relationships between Azure Datacenter, Resource Groups, Cloud Networks, Subnets, and Virtual Network Peerings to accurately represent network topology in the CMDB.
    • Tag Collection: Discovers Azure tags associated with networks and stores them in the Key Value [cmdbkeyvalue] table for enhanced filtering and reporting capabilities.

    What Customers Can Expect

    • Improved Network Visibility: Detailed, up-to-date records of Azure networking components within the CMDB support better network management and troubleshooting.
    • Accurate Service Mapping: Relationships between network resources ensure accurate dependency mapping for services running in Azure.
    • Governance and Compliance: Tag information helps classify and manage cloud resources according to organizational policies.
    • Support for Azure GovCloud: Specific configuration steps enable discovery of GovCloud environments, extending visibility into specialized Azure regions.

    Discovery and Service Mapping Patterns finds Azure virtual networks, subnets, and virtual network peerings on your cloud environment. Discovering some of these resources may require updating to the latest version of the Discovery and Service Mapping Patterns application from the ServiceNow Store.

    Pattern-based discovery and mapping requirements

    Verify the Microsoft Azure discovery prerequisites
    For more information, see the prerequisites section in Microsoft Azure Cloud components discovery using patterns.
    Configure the Discovery schedule to support GovCloud
    Discovering Azure GovCloud (US) accounts requires using a datacenter URL when setting up an Azure service account. For more information, see Set up Azure service accounts.

    Data collected by Discovery during horizontal discovery

    Discovery populates the data in the CMDB when running the Azure - Network and Subnet (LP) pattern.

    Table 1. Cloud Network [cmdb_ci_network]
    Field Description
    Name [name] The Name or ID if no Name is specified for the cloud network.
    Object ID [object_id] A unique identifier, allocated by Azure for this resource.
    State [state] The current state of the network.
    Cidr [cidr] Classless Inter-Domain Routing (CIDR) representation of the network. For example: 10.0.0.0/24.
    Install Status [install_status] Install status of the resource. Default value is Installed.
    Table 2. Cloud Subnet [cmdb_ci_cloud_subnet]
    Field Description
    Name [name] The Name or ID if no Name is specified for the cloud subnet.
    Object ID [object_id] A unique identifier, allocated by Azure for this resource.
    State [state] The current state of the subnet.
    CIDR [cidr] CIDR representation of the subnet. For example, 10.0.0.0/24.
    Install Status [install_status] Install status of the resource. Default value is Installed.
    Table 3. Virtual Network Peering [cmdb_ci_vnet_peering]
    Field Description
    Name [name] The Name or ID if no Name is specified for the virtual network peering.
    Object ID [object_id] A unique identifier, allocated by Azure for this resource.
    State [state] The current state of the virtual network peering.
    Use Remote Gateways [use_remotegateways] Indicates whether remote gateways are used for this peering.
    Install Status [install_status] Install status of the resource. Default value is Installed.

    CI relationships

    The Azure - Network and Subnet (LP) pattern creates the following relationships and references to support Azure Network and Subnet discovery. References link to records in other tables and don't appear in the CI Relationship [cmdb_rel_ci] table.

    Table 4. CI relationships
    CI Relationship CI
    Cloud Network [cmdb_ci_network] Hosted on::Hosts Azure Datacenter [cmdb_ci_azure_datacenter]
    Resource Group [cmdb_ci_resource_group] Contains::Contained by Cloud Network [cmdb_ci_network]
    Cloud Network [cmdb_ci_network] Contains::Contained by Cloud Subnet [cmdb_ci_cloud_subnet]
    Cloud Network [cmdb_ci_network] Contains::Contained by Virtual Network Peering [cmdb_ci_vnet_peering]
    Table 5. CI references
    CI Field Referenced CI
    Key Value [cmdb_key_value] Configuration item [configuration_item] Cloud Network [cmdb_ci_network]

    Azure Tag discovery

    The Azure - Network and Subnet (LP) pattern collects tags and populates them in the Key Value [cmdb_key_value] table.

    Table 6. Key Value [cmdb_key_value]
    Field Description
    Key [key] Tag name.
    Value [value] Tag value.
    Configuration item [configuration_item] References the Cloud Network [cmdb_ci_network] table.