AWS Resource Explorer
A service that searches and visualizes all resources within an AWS account across regions, streamlining resource management in multi-region environments
Overview
AWS Resource Explorer is a service that enables cross-region search and visualization of all AWS resources within an account. It indexes resources across all enabled regions and provides a unified search interface, eliminating the need to switch between region consoles to find resources. It supports tag-based filtering, resource type filtering, and free-text search, making it invaluable for resource inventory management, cost optimization, and security audits in complex multi-region environments.
Index Configuration and Aggregator Design
Resource Explorer uses two types of indexes: local indexes and an aggregator index. A local index is automatically created in each region where Resource Explorer is enabled, indexing resources in that region. The aggregator index is designated in one region and consolidates data from all local indexes, enabling cross-region search from a single endpoint. Only one aggregator index can exist per account. The recommended design is to enable local indexes in all regions and set the aggregator in your primary region. Index updates occur within minutes of resource creation or modification, though it is not real-time. For Organizations, a delegated administrator can create organization-level views that search across all member accounts, providing centralized resource visibility without requiring access to individual accounts.
Search Query Usage and Practical Search Patterns
Resource Explorer supports structured queries with filters for resource type, region, tag key/value, and service. Free-text search finds resources by name, ARN, or ID fragments. Practical search patterns include finding all untagged resources (for cost allocation compliance), locating resources in unexpected regions (for security audits), and identifying resources of a specific type across all regions (for inventory). Views can be created to save frequently used search filters, and the default view determines what appears in the unified search bar in the AWS Console. Custom views with restricted resource types or regions can be shared with specific IAM principals, enabling role-based resource visibility. The search API enables programmatic resource discovery for automation scripts and compliance tools.
Leveraging for Cost Optimization and Security Audits
For cost optimization, Resource Explorer helps identify orphaned resources - EBS volumes without attachments, unused Elastic IPs, idle load balancers - that continue incurring charges. Cross-region search reveals resources accidentally created in non-standard regions. Combined with tag-based filtering, it identifies resources missing cost allocation tags that need remediation. For security audits, it provides a complete inventory of resources that may have public access (S3 buckets, EC2 instances with public IPs, RDS instances) across all regions. Regular exports of resource inventories serve as compliance evidence. Resource Explorer is free to use with no per-query charges, making it suitable for frequent automated searches. Integration with AWS Config provides deeper compliance analysis, while Resource Explorer handles the initial discovery and inventory phase.