All 7 AWS Direct Connect & Hybrid Connectivity questions
More in AWS Direct Connect & Hybrid Connectivity
What is AWS Direct Connect and how does it differ from connecting to AWS over the public internet? What is a Virtual Private Gateway, and how does it relate to establishing hybrid connectivity with a VPC? How does a Site to Site VPN connection provide a quicker, lower cost alternative to Direct Connect for hybrid connectivity? How can Direct Connect and Site to Site VPN be combined to provide a highly available hybrid connectivity design? How does Direct Connect support Link Aggregation Groups to increase bandwidth and provide additional resilience? How does AWS Transit Gateway simplify complex hybrid network architectures involving many VPCs and on premises connections?
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What is a Direct Connect Gateway, and how does it simplify connecting a single Direct Connect connection to multiple VPCs across different regions?

Intermediate

Answer

A Direct Connect Gateway lets you associate a single Direct Connect connection with multiple Virtual Private Gateways attached to VPCs across different AWS regions, meaning you do not need to provision a separate physical Direct Connect connection for every region you operate in, significantly simplifying network architecture and reducing cost for organizations with resources spread across multiple regions.
aws directconnect create-direct-connect-gateway --name my-dx-gateway --amazon-side-asn 64512
Real-world example A global company with VPCs in three different AWS regions uses a single Direct Connect Gateway to connect its one physical Direct Connect connection to all three regions, avoiding the cost and complexity of setting up separate physical connections for each region.

Common follow-ups: What is the maximum number of VPCs that can be associated with a single Direct Connect Gateway?;How does a Direct Connect Gateway differ from a Transit Gateway for multi VPC connectivity?

VPC & Networking;AWS Global Infrastructure (Regions AZs & Edge Locations)
All 7 AWS Direct Connect & Hybrid Connectivity questions