AWS VPC Peering vs. Transit Gateway vs. PrivateLink: Cross-VPC Use Case Guide

AWS VPC Peering vs. Transit Gateway vs. PrivateLink: Cross-VPC Use Case Guide

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In cloud architecture, connecting Virtual Private Clouds (VPCs) is a foundational requirement for scaling services, promoting modularity, and adhering to security best practices. AWS offers three major solutions to facilitate VPC-to-VPC communication: VPC Peering, Transit Gateway, and PrivateLink. The correct method depends on scalability, cost, and use case requirements. This guide dissects each approach to help you determine the most efficient solution for your architecture.