---
title: AWS Resource Explorer
description: AWS Resource Explorer is a cross-region, cross-service search service for AWS resources — a managed alternative to AWS Config queries and tag-based custom catalogs.
url: https://www.factualminds.com/glossary/aws-resource-explorer/
publishDate: 2026-06-13
updateDate: 2026-06-13
---

# AWS Resource Explorer

> AWS Resource Explorer is a cross-region, cross-service search service for AWS resources — a managed alternative to AWS Config queries and tag-based custom catalogs.

## Definition

AWS Resource Explorer indexes resources across AWS services and regions so you can search from a single query interface (console, API, or CLI). With an **aggregator index** in an AWS Organization, search spans member accounts. **Views** scope results and attach IAM permissions for delegated self-service search. Resource Explorer answers “what exists where?” — it is an inventory search layer, not a configuration history or compliance engine.

## When to use it

- **Ad hoc discovery:** finding orphaned EBS volumes, stray Elastic IPs, or resources in regions teams forgot about
- **Decommissioning** a service, region, or account — enumerate everything before delete
- **Tag hygiene audits** — locate resources missing cost-allocation or environment tags
- **First-pass organization-wide inventory** before deeper AWS Config or custom CMDB work

## When not to use it

- Continuous compliance evidence or **configuration drift history** — use AWS Config
- Batch operational actions on grouped resources — use **Resource Groups** or tag-based automation
- Real-time security alerting — Resource Explorer is query-oriented, not an event stream
- Replacing a full asset CMDB with ownership, lifecycle, and dependency metadata Resource Explorer does not store

## Tips

- Create an **organization-level aggregator index** in your management or delegated admin account — without it, search stays single-account
- Grant `resource-explorer-2:Search` **and** read permissions on underlying services; search succeeds only for resource types the caller can describe
- Save frequent queries as **views** for platform teams and auditors with least-privilege IAM
- Run Resource Explorer before major **region exits** or account closures — Config history helps later, but search finds what to delete now
- Pair with Tag Editor when audits find gaps — search finds offenders, Tag Editor fixes tags in bulk

## Gotchas

### Serious

- **Confused with Config:** Teams treat search results as compliance proof. Resource Explorer shows current index state, not who changed what or when.
- **Incomplete index:** New service types or regions may require index updates; stale indexes miss resources during cleanup exercises.
- **Over-broad IAM:** Views that expose every account to every engineer leak infrastructure topology — scope views by OU or environment.

### Regular

- Resource Explorer indexing lag means very new resources may not appear immediately after creation.
- Complex queries across many accounts can hit API pagination limits — export or script large inventories.
- Free to use, but the API calls underlying services describe — throttling on heavily queried accounts is possible.

## Official references

- [What is AWS Resource Explorer?](https://docs.aws.amazon.com/resource-explorer/latest/userguide/welcome.html) — indexing, search syntax, and views
- [Aggregator indexes for Organizations](https://docs.aws.amazon.com/resource-explorer/latest/userguide/manage-aggregator-regions.html) — multi-account search setup

## Related FactualMinds content

- [AWS Managed Services Provider](/services/aws-managed-services/)
- [AWS Well-Architected Review](/services/aws-architecture-review/)

## Related AWS Services

- aws-managed-services
- aws-architecture-review

---

*Source: https://www.factualminds.com/glossary/aws-resource-explorer/*