AWS Resource Access Manager
Share resources across accounts
Share resources (subnets, Transit Gateway, Route 53 Resolver rules, License Manager configs…) with other accounts or your whole Organization without duplicating them.
- Cost$ Low
- Difficulty●●●●●
- Costs money when idle?No
- Serverless
- In examsSAA · SOA
Think of it asLike letting other departments share your meeting room instead of each building its own.
When to use it
✓ Use it when
Multiple accounts need to use resources managed by one account.
✗ Avoid it when
Sharing S3 objects/buckets or KMS keys → resource-based policy.
Common uses
- Share VPC subnets with application accounts
- Share a Transit Gateway within the Organization
- Share Resolver rules
What does it cost?
- Pricing model: Free; you pay only for the shared resources.
Related services
SAA-C03 study guide
Resource Access Manager is covered in these study modules: