AWS Certified Advanced Networking – Specialty (ANS-C01)Network DesignMedium
A large multi-national corporation uses hundreds of AWS accounts organized under AWS Organizations. Each business unit operates its own set of VPCs in various AWS Regions. The corporate IT department needs to implement a standardized and centralized IP address management solution that can allocate IP addresses for new VPCs and subnets across all accounts and regions, prevent IP conflicts, and provide a clear hierarchical view of IP space utilization. Which AWS service is best suited for this requirement?
- ACustom scripts integrated with CloudFormation
- BAWS IP Address Manager (IPAM)
- CAWS Resource Access Manager (RAM)
- DAWS Organizations Service Control Policies (SCPs)
Show answer & explanationAnswer & explanation
Correct answer: B. AWS IP Address Manager (IPAM)
AWS IP Address Manager (IPAM) is a managed AWS service that makes it easier to plan, track, and monitor IP addresses for your AWS workloads. It provides a centralized operational dashboard to view and manage IP addresses across all accounts and regions, helping prevent IP conflicts and ensuring efficient utilization of IP space.
Why the other options are wrong
- A. Custom scripts can be used, but they lack the full features, automation, and managed aspects of a dedicated service like IPAM, requiring significant development and maintenance effort.
- C. RAM is for sharing AWS resources between accounts, not for IP address management.
- D. SCPs are for setting maximum permissions for accounts in an organization, not for IP address management.
AWS IP Address Manager (IPAM)
A managed AWS service that simplifies the planning, tracking, and monitoring of IP addresses across AWS accounts and regions, preventing overlaps and enabling efficient IP space utilization.
- Centralized IP management across accounts and regions.
- Prevents IP address conflicts.
- Supports hierarchical IP space allocation.
- Integrates with VPCs and subnet creation.
- Provides operational dashboards for visibility.
Memory trick: IPAM's the boss, no IP loss, across all accounts, it's the right cross!