No, bandwidth isn't an issue. We're using the Akamai Web Application Accelerator to get around the slow downs that happen normally and to ensure a good end user experience during peak (holiday) seasons.
From the page:
Akamai Web Application Accelerator speeds performance of dynamic, interactive Web applications without requiring additional infrastructure by taking a fundamentally different approach to application delivery, employing techniques including:
* Dynamic mapping
* Dynamic routing
* Caching and pre-fetching
* Connection/TCP optimization
* Access control
How it Works
Requests and application responses between users and your origin server are sent over the Akamai platform. It's the world's largest fault-tolerant network, comprising 20,000 servers in 71 countries. When a user requests an application, dynamic mapping technology directs the request to the closest Akamai server. Using route optimization, we identify the fastest, most reliable path back to your server to retrieve the application content, and employ connection techniques to optimize communication between servers, improving performance and reliability of both retrieval and delivery. Access control features ensure application security is maintained throughout the process.
Why have Akamai accelerate your Web applications?
* More control over the delivery of your applications
* Optimized delivery means faster performance
* The Akamai platform handles peak usage easily
* IT burden drops - no additional hardware
Sounds like a different tier to me. The best part is that it doesn't force the end user to pick up the tab.