04. AWS Resource Access Manager (AWS RAM)
AWS Resource Access Manager (RAM) allows you to securely share your AWS resources with other AWS accounts or with accounts within your AWS Organization, without the need to duplicate resources.
| Benefit | Description |
|---|---|
| Avoid Duplication | Share existing resources instead of creating multiple copies. |
| Simplify Management | Centralize shared infrastructure such as VPCs and subnets. |
| Seamless Connectivity | Enables inter-account communication within the same network. |
| Integration with Organizations | Simplifies sharing across accounts under the same organization. |
Supported Resources
Some of the commonly shared resources include:
- VPC Subnets
- Transit Gateway
- Aurora Databases
- License Manager configurations
- Route53 Resolver rules
- RAM resource shares (custom-defined)
Example Use Case
Scenario:
- You have a main cloud account containing a VPC with private subnets.
- You share this VPC with Account 1 and Account 2 using AWS RAM.
Result:
- Account 1 and Account 2 can:
- Launch EC2 instances inside the shared VPC.
- Access shared resources like RDS Databases or Application Load Balancers.
- All instances communicate directly over the same network, simplifying architecture and deployments.
Summary
| Concept | Description |
|---|---|
| Purpose | Share AWS resources securely between accounts. |
| Sharing Scope | Individual accounts or accounts within an AWS Organization. |
| Main Advantage | Network and resource sharing without duplication. |
📘 Key takeaway:
AWS RAM enables resource sharing across accounts, promoting efficiency, cost savings, and simplified architecture — especially useful for multi-account setups within AWS Organizations.