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In this lesson we explain AWS Resource Explorer — what it solves, how it works, and how to use it for cross-Region resource discovery and inventory. Before Resource Explorer, discovering and managing AWS resources across multiple accounts and Regions required custom tooling or manual searches. That made it hard to attribute costs, enforce consistent tagging, and produce audit-ready reports. Resource Explorer addresses those gaps by providing a unified search surface across Regions, using tags, names, IDs, and other metadata. So what does Resource Explorer do? It simplifies search and discovery of your AWS resources across Regions. Users can locate resources using tags, keywords, and metadata, which makes inventory, reporting, and cross-region operations much easier.
A "Resource Explorer" diagram showing an AWS account box split into three regions (us-east-1, ap-south-1, eu-west-2) each containing various AWS service icons. An orange circular widget labeled "Names Tags IDs" on the left points into the account.

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Roles and responsibilities

Two IAM role categories are commonly used with Resource Explorer: Grant least-privilege IAM policies so administrators can manage configuration and users can run queries only for the data they need.

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Indexes and replication

Resource Explorer organizes resource metadata into indexes. When you enable Resource Explorer in a Region, it builds a local index that contains resource documents for that Region. If you designate an aggregator Region, other enabled Regions replicate their local indexes to the aggregator. Queries run against an aggregator return results from the replicated Regions once replication completes.
A diagram titled "Resource Explorer" showing an AWS console with three region boxes (us-east-1, ap-south-1, eu-west-2) each containing document/index icons. To the right are two labeled circular icons: "Local Index" and "Aggregator Index."
Example: the administrator enables Resource Explorer in three Regions and selects ap-south-1 as the aggregator Region. US East 1 and EU West 2 each keep their local indexes and replicate documents into ap-south-1. After replication, queries against the aggregator return resources from all three Regions.
A slide diagram titled "Resource Explorer – View and Filter" showing a user sending a query to an ap-south-1 resource explorer that filters and displays document icons, with connections to other regions (us-east-1 and eu-west-2). The graphic illustrates cross-region resource discovery and filtering.

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Views, queries, and filters

  • Create views to scope search results by account, Region, resource type, tags, or other metadata. Views make it simple to tailor results for teams or auditors.
  • Use tag-based queries and simple keywords to find resources quickly. Views + filters enable targeted reporting and operations workflows.
  • Queries can be performed from:
    • AWS Management Console: interactive searches and saved views
    • AWS SDKs: integrate Resource Explorer into automation and tools
    • AWS CLI: script searches and export results (ensure IAM permissions allow the actions)

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How to get started (high-level)

  1. Enable Resource Explorer in the Regions you require.
  2. Optionally choose an aggregator Region to consolidate search results across Regions.
  3. Create views that reflect teams, projects, or compliance requirements.
  4. Grant IAM permissions for administrators (manage configuration) and users (search resources).
  5. Use the Console, SDKs, or CLI to run searches and incorporate results into reporting or automation.
Resource Explorer is free to use — there are no additional charges for using the service.
Resource Explorer saves time and effort by providing a central search interface across Regions. It eliminates the need to build and maintain a custom search infrastructure for resource discovery and reporting.

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