AWS Certified Advanced Networking – Specialty (ANS-C01)Network DesignMedium
A large multinational corporation has hundreds of AWS accounts organized under AWS Organizations, with VPCs spread across multiple regions. The networking team needs a robust solution to centrally manage and allocate IP addresses for all VPCs, ensuring no CIDR block overlaps. They also need to provide visibility into IP utilization and automate the IP address management process. Which AWS service is purpose-built to address these requirements?
- AAWS Control Tower
- BAWS Resource Access Manager (RAM)
- CAWS Network Firewall
- DAWS IP Address Manager (IPAM)
Show answer & explanationAnswer & explanation
Correct answer: D. AWS IP Address Manager (IPAM)
AWS IP Address Manager (IPAM) is a VPC feature that makes it easier to plan, track, and monitor IP addresses for your AWS workloads. It automatically discovers VPCs and their CIDRs, helps prevent overlaps, and provides centralized management and visibility, which is ideal for large organizations with many accounts and VPCs.
Why the other options are wrong
- A. AWS Control Tower helps set up and govern a multi-account AWS environment but does not directly manage IP addresses at a granular level like IPAM.
- B. AWS Resource Access Manager (RAM) is used for sharing AWS resources between accounts, not for IP address management.
- C. AWS Network Firewall is a managed firewall service for protecting VPCs, not for IP address management.
AWS IP Address Manager (IPAM)
A VPC feature that enables centralized planning, tracking, and monitoring of IP addresses for AWS workloads, helping to prevent CIDR overlaps and automate IP allocation.
- Integrates with AWS Organizations for multi-account management.
- Automatically discovers VPCs and their CIDR blocks.
- Helps prevent CIDR overlaps.
- Provides visibility into IP utilization and allocation.
Memory trick: IPAM: Your 'IP Address Master' for the cloud.