AWS Certified Solutions Architect – Professional Practice Pack

Explanation

AWS Direct Connect provides a dedicated, private network connection from an on-premises data center to AWS. This connection bypasses the public internet, offering more consistent network performance, lower latency, and higher bandwidth compared to VPN connections. It is designed specifically for stable and secure private connectivity, making it the ideal choice when a company requires a dedicated private connection for stable, low-latency access to AWS resources. Why the other options are incorrect: - AWS VPN Connection: AWS VPN Connection typically refers to a VPN over the internet, which does not provide a dedicated private connection. While it offers secure and encrypted connectivity, it relies on the public internet, which can introduce variable latency and less stability compared to dedicated links. - AWS Transit Gateway: AWS Transit Gateway is a network transit hub that connects VPCs and on-premises networks but does not itself provide the dedicated physical connection. It facilitates routing but depends on underlying connections like Direct Connect or VPN for physical connectivity. - AWS Site-to-Site VPN: AWS Site-to-Site VPN establishes an encrypted VPN tunnel over the public internet from the on-premises network to AWS. Like the AWS VPN Connection, it is not a dedicated private connection and can suffer from variable latency and bandwidth issues. Real-world example: A financial services company requires a consistent and secure connection between its headquarters and AWS to support real-time trading applications. The solutions architect sets up AWS Direct Connect, providing a dedicated fiber link that delivers stable, low-latency network performance critical for the application's success. Key takeaway: Use AWS Direct Connect to establish a dedicated, stable, and low-latency private network connection between on-premises data centers and AWS environments.