Direct Connect

aws/networking aws/hybrid

💡 Definition

AWS Direct Connect creates a dedicated network connection from your premises to AWS. It bypasses the public internet, providing a more consistent network experience than internet-based connections.

🔑 Key Concepts

Dedicated Physical Link: A private fiber connection between your data center and an AWS Direct Connect location.
Private Connectivity: Traffic does not traverse the public internet.
Consistent Performance: Lower latency and higher bandwidth (1 Gbps, 10 Gbps, 100 Gbps) than VPN.
Cost Savings: Reduced data transfer rates compared to internet transfer.

⚙️ How it Works

You work with an AWS Partner or network provider to run a physical fiber cable from your router to an AWS Direct Connect location. You then create virtual interfaces to connect to your VPCs or public services like S3.

🎯 Use Cases

High Bandwidth: Large data transfers (Big Data, Media).
Real-time Applications: Applications requiring consistent, low latency.
Security/Compliance: Data that must not traverse the public internet.
Hybrid Cloud: Tightly integrated on-prem and cloud environments.

💰 Pricing Model

Port Hour: Charged for the physical port capacity.
Data Transfer: Charged for data flowing out of AWS (lower rate than internet).

📝 Exam Tips (CLF-C02)

Physical, dedicated connection.
Bypasses the internet.
Takes time to set up (weeks/months).
Use VPN as a backup or for immediate connectivity while waiting for Direct Connect.

See Also: * VPN * VPC * Transit Gateway