Estimate CDN savings from a discounted plan by comparing eligible traffic cost, commitment coverage, fixed fees, and uncovered usage against pay-as-you-go spending.
The main result is savings over the full analysis period at a constant monthly traffic volume. A negative number means the entered plan costs more than on-demand service.
The model charges only actual covered usage at the discounted rate. If your provider bills the entire commitment whether used or not, treat the commitment as a fixed charge by adjusting the plan fee.
For 100,000 GB at $0.06/GB, an 80,000 GB commitment discounted 20%, and a $200 monthly fee, baseline cost is $6,000 and plan cost is $5,240. Savings are $760 per month or $9,120 over 12 months.
The calculator discounts actual traffic up to the entered commitment and prices excess traffic at the on-demand rate.
Yes. Fixed fees or a small discount can make the plan more expensive than on-demand pricing.
It divides total plan cost by actual monthly traffic, including the fixed fee.
Cost may still equal the fixed monthly fee; effective per-GB rate is shown as not applicable.
Not directly. Add any unavoidable unused-commitment cost to the monthly plan fee.
| Variable | Meaning | Unit |
|---|---|---|
| B | On-demand baseline cost | $/month |
| D | Discount on covered traffic | % |
| F | Recurring plan fee | $/month |
| S | Plan savings | $/period |