Amazon Virtual Private Cloud (Amazon VPC) Managed Prefix List pattern-based discovery

  • Release version: Australia
  • Updated May 13, 2026
  • 2 minutes to read
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    Summary of Amazon Virtual Private Cloud (Amazon VPC) Managed Prefix List pattern-based discovery

    The Amazon Virtual Private Cloud (Amazon VPC) Managed Prefix List pattern-based discovery in ServiceNow enables automated detection and inventory of Amazon VPC Managed Prefix Lists within your AWS cloud environment. This discovery populates both CMDB and non-CMDB tables, providing comprehensive visibility into VPC managed prefix lists and their associated metadata to support asset and configuration management.

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    Key Features

    • Pattern-based discovery: Utilizes the Amazon AWS - VPC Managed Prefix List - Extended Inventory (LP) pattern to identify managed prefix lists.
    • Data population: Stores discovered data in dedicated CMDB tables (cmdbawsvpcmanagedprefixlist, cmdbcicmpresource) and non-CMDB AWS-specific tables for detailed inventory tracking.
    • Tag collection: Retrieves AWS tags associated with the managed prefix lists and stores them in the cmdbkeyvalue table, linking tags to their respective cloud resources.
    • CI relationships and references: Automatically creates relationships such as "Hosted on" linking the managed prefix list CI to the AWS Datacenter CI, enhancing configuration item context.
    • Pattern activation: The discovery pattern is disabled by default and requires enabling. Starting with Visibility Content version 6.28.0, enabling or disabling patterns does not count as customization, allowing for seamless upgrades.
    • Prerequisites: Requires AWS discovery prerequisites to be met and verifying that the managed prefix list resource is not on the Resource Inclusion List to avoid duplicate discovery.

    Practical Application for ServiceNow Customers

    ServiceNow customers leveraging this pattern can efficiently discover and manage Amazon VPC Managed Prefix Lists, ensuring accurate and up-to-date CMDB records. This capability supports improved visibility into AWS network resources, aids in compliance and governance, and simplifies cloud asset management. By activating the pattern and meeting AWS discovery prerequisites, customers can integrate this discovery into their existing cloud asset inventory workflows.

    The detailed data fields captured include the managed prefix list name, unique identifiers (ARN and list ID), state, and operational status, enabling precise tracking and lifecycle management within ServiceNow.

    Additionally, the automatic collection of AWS tags enhances the ability to categorize and filter cloud resources based on organizational metadata.

    Discovery and Service Mapping Patterns finds Amazon Virtual Private Cloud (Amazon VPC) Managed Prefix Lists 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 AWS discovery prerequisites
    For more information, see the prerequisites section in AWS discovery using patterns.
    Remove resources from the Resource Inclusion List table
    Verify that the relevant resource isn't listed in the Resource Inclusion List [sa_cloud_inventory_resource_whitelist] table to avoid duplicate discovery. For more information on removing resources from the Resource Inclusion List, see AWS Resource Inventory discovery with Patterns.
    Enable the relevant pattern
    The pattern for this service is disabled by default. Starting with Visibility Content version 6.28.0, activating or deactivating a pattern won't be considered a customization, and it will continue to receive updates. Patterns that were previously activated or deactivated will reset to the latest predefined version after upgrading while retaining the last active field value. For more information on enabling patterns, see Activate a disabled pattern.

    Discovery and Service Mapping Patterns application populates data in both CMDB and non-CMDB tables.

    Data stored in non-CMDB tables

    Discovery and Service Mapping Patterns application populates data in the non-CMDB table when running the Amazon AWS - VPC Managed Prefix List - Extended Inventory (LP) pattern.

    You can review the non-CMDB AWS tables by navigating to All > Configuration > AWS. You can also search the navigation filter for the specific pattern name.

    Table 1. AWS VPC Managed Prefix List [cmdb_aws_vpc_managed_prefix_list]
    Field Description
    Name [name] Name of the managed prefix list.
    Object ID [object_id] The Amazon Resource Name (ARN) of the managed prefix list.
    List ID [list_id] The unique identifier of the managed prefix list.
    State [state] The current state of the managed prefix list.

    For example: create-complete, modify-in-progress, or delete-complete.
    Configuration Item [configuration_item] References the Cloud Resource [cmdb_ci_cmp_resource] table.

    Data stored in CMDB tables

    Discovery and Service Mapping Patterns application populates data in the CMDB when running the Amazon AWS - VPC Managed Prefix List - Extended Inventory (LP) pattern.

    Table 2. Cloud Resource [cmdb_ci_cmp_resource]
    Field Description
    Name [name] Name of the managed prefix list.
    Object ID [object_id] The ARN of the managed prefix list.
    Resource type [resource_type] Type of resource. The value is set to AWS::VPC::ManagedPrefixList.
    Install Status [install_status] Install status of the resource. Default value is Installed.
    Operational status [operational_status] Operational status of the resource. Default value is Operational.

    CI relationships

    The Amazon AWS - VPC Managed Prefix List - Extended Inventory (LP) pattern creates the following relationships and references to support Amazon VPC Managed Prefix List discovery. References link to records in other tables and don't appear in the CI Relationship [cmdb_rel_ci] table.

    Table 3. CI relationships
    CI Relationship CI
    Cloud Resource [cmdb_ci_cmp_resource] Hosted on::Hosts AWS Datacenter [cmdb_ci_aws_datacenter]
    Table 4. CI references
    CI Field Referenced CI
    AWS VPC Managed Prefix List [cmdb_aws_vpc_managed_prefix_list] Configuration Item [configuration_item] Cloud Resource [cmdb_ci_cmp_resource]
    Key Value [cmdb_key_value] Configuration item [configuration_item] Cloud Resource [cmdb_ci_cmp_resource]

    AWS Tag discovery

    The Amazon AWS - VPC Managed Prefix List - Extended Inventory (LP) pattern collects tags and populates them in the Key Value [cmdb_key_value] table.

    Table 5. Key Value [cmdb_key_value]
    Field Description
    Key [key] Tag name.
    Value [value] Tag value.
    Configuration item [configuration_item] References the Cloud Resource [cmdb_ci_cmp_resource] table.