Amazon Amazon VPC Managed Prefix List pattern-based discovery

  • Release version: Yokohama
  • Updated May 13, 2026
  • 2 minutes to read
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    Summary of Amazon VPC Managed Prefix List pattern-based discovery

    The Amazon VPC Managed Prefix List pattern-based discovery in ServiceNow enables customers to identify and map Amazon Virtual Private Cloud (VPC) Managed Prefix Lists within their AWS cloud environments. This discovery process is part of the Discovery and Service Mapping Patterns application and helps maintain accurate and up-to-date data in the Configuration Management Database (CMDB) and related tables.

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    Key Requirements

    • AWS Discovery Prerequisites: Ensure all AWS discovery prerequisites are met, as detailed in the Amazon AWS Cloud components discovery using patterns documentation.
    • Resource Inclusion List: Verify that the managed prefix lists you want to discover are not included in the Resource Inclusion List ([sacloudinventoryresourcewhitelist]) to prevent duplicate discoveries.
    • Enable the Pattern: The Amazon AWS - VPC Managed Prefix List pattern is disabled by default. From Visibility Content version 6.28.0 onward, enabling or disabling this pattern is not treated as a customization and updates continue after upgrades. Activate this pattern to begin discovery.

    Data Storage and Tables

    The discovery process populates data in both CMDB and non-CMDB tables using the Amazon AWS - VPC Managed Prefix List - Extended Inventory (LP) pattern.

    • Non-CMDB Data: Data is stored in AWS-specific tables accessible via All > Configuration > AWS. This allows customers to review managed prefix list details directly.
    • CMDB Data: Key information such as the managed prefix list name, Amazon Resource Name (ARN), resource type (AWS::VPC::ManagedPrefixList), install status, and operational status are stored in the Cloud Resource [cmdbcicmpresource] table to maintain configuration item (CI) records.

    Discovered Attributes and Relationships

    • Attributes Captured: Managed prefix list name, ARN, unique list ID, and state (e.g., create-complete, modify-in-progress).
    • CI Relationships: The discovered prefix lists are linked to AWS Datacenter CIs via a "Hosted on::Hosts" relationship, supporting dependency mapping.
    • CI References: Configuration Items reference the Cloud Resource table, facilitating integrated views across AWS resources.

    AWS Tag Collection

    The pattern also collects AWS tags associated with managed prefix lists and stores them in the Key Value [cmdbkeyvalue] table. Each tag's name, value, and associated configuration item are recorded, enabling tag-based filtering, reporting, and management within ServiceNow.

    Practical Impact for ServiceNow Customers

    By implementing this pattern-based discovery, customers can automatically and reliably detect AWS VPC Managed Prefix Lists, enriching their CMDB with detailed and actionable cloud resource data. This supports better cloud resource management, compliance, and service mapping in hybrid environments. Activation of the pattern and meeting prerequisite conditions ensure smooth discovery and continuous updates.

    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 Amazon AWS Cloud components 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 Amazon Web Services (AWS) Resource Inventory.
    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.