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A financial services company is migrating its critical trading application to Google Cloud. The application requires extremely low-latency network connectivity (under 1ms round-trip time) between its Compute Engine instances and specific on-premises network devices. The current network architecture uses a VPN tunnel, which introduces noticeable latency. The company needs a dedicated, high-bandwidth connection with a Service Level Agreement (SLA) for availability. Which Google Cloud networking solution should they choose?
- ADirect Peering with Google.
- BCloud Interconnect (Dedicated Interconnect).
- CCloud Router with custom route advertisements.
- DCloud VPN with High-Availability (HA VPN).
Show answer & explanationAnswer & explanation
Correct answer: B. Cloud Interconnect (Dedicated Interconnect).
Dedicated Interconnect provides a direct physical connection between an on-premises network and Google's network, offering high bandwidth, extremely low latency, and a strong SLA, which are critical requirements for a financial trading application.
Why the other options are wrong
- A. Direct Peering allows customers to exchange traffic directly with Google's network but is primarily for large networks exchanging public internet traffic and does not provide a private connection for internal resources or an SLA for internal traffic.
- C. Cloud Router is used for dynamic routing with VPNs and Interconnects but is not a standalone connectivity solution itself; it manages routes for the underlying connection type.
- D. Cloud VPN, even HA VPN, uses IPsec tunnels over the public internet, which introduces higher and less predictable latency compared to a direct physical connection.
Cloud Interconnect
Cloud Interconnect provides a direct physical connection from your on-premises network to Google's network, offering higher bandwidth and lower latency than VPNs over the public internet.
- Dedicated Interconnect: Direct physical connection, high bandwidth, low latency, SLA.
- Partner Interconnect: Connects via a service provider, offering flexible bandwidth.
- Both provide private connectivity, bypassing the public internet.
Memory trick: Connect with speed, no more delay, Interconnect lights the way!