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AWS Transit Gateway

Explore how AWS Transit Gateway centralizes and manages multiple VPC connections using a hub-spoke model, reducing network complexity. Understand key concepts like attachments, route tables, associations, and route propagation to effectively design scalable cloud network architectures.

Introduction

Consider the following scenario: we need to connect several VPCs so that the resources within them can communicate. So far, we’ve learned that VPC peering can connect two VPCs at a time, which means that several VPCs will necessitate a large number of peering connections.

The number of connections will further increase if we also need to connect the VPCs to an on-prem network using either Site-to-Site VPN or Direct Connect, leading to a complex network architecture.

For example, ...