Global Accelerator cost: premium routing for global users

Quick answer

AWS Global Accelerator bills a fixed hourly fee per accelerator plus a premium per-GB data transfer charge (a data transfer premium on top of normal egress) for routing user traffic onto the AWS global backbone early, improving latency and availability for global users. For latency-sensitive global applications it can meaningfully improve performance, but the data transfer premium adds up at scale. The levers: use it where the performance benefit justifies the premium, and consider CloudFront for cacheable content instead.

AWS Global Accelerator improves performance for global users by routing their traffic onto the AWS backbone network at the nearest edge, rather than traversing the public internet to your region. It bills a fixed hourly fee plus a per-gigabyte data transfer premium, so it is a premium networking feature whose cost is justified by latency-sensitive global workloads.

Fixed fee plus data premium

Component	Cost
Accelerator	Fixed hourly fee per accelerator
Data transfer premium	Per-GB premium on top of egress

The fixed hourly fee is modest. The cost that scales is the data transfer premium, a per-gigabyte charge on traffic through the accelerator, on top of normal egress, varying by region. So at high traffic volumes, the premium becomes the dominant cost, and it is worth it only when the performance benefit matters.

When it is worth it

Global Accelerator helps latency-sensitive applications with globally-distributed users, by getting traffic onto the fast AWS backbone sooner and providing fast failover and static anycast IPs. For gaming, real-time applications, APIs with global users where latency matters, the performance gain can justify the premium. For cacheable content, however, CloudFront (a CDN) is usually the better and cheaper choice, since it caches at the edge rather than just routing.

Controlling Global Accelerator cost

Use Global Accelerator where the latency and availability benefit for global users genuinely justifies the data transfer premium (real-time, latency-sensitive, non-cacheable traffic), use CloudFront instead for cacheable content (cheaper, and caching beats routing for static content), and be aware the premium scales with traffic so a high-volume accelerator is expensive. Because it is a premium feature, applying it selectively where performance justifies the cost is the discipline.

FAQ

How is AWS Global Accelerator priced?

A fixed hourly fee per accelerator plus a premium per-GB data transfer charge (a data transfer premium on top of normal egress, varying by region) for routing user traffic onto the AWS backbone. The fixed fee is modest; the data transfer premium scales with traffic and becomes the dominant cost at high volume.

How do I reduce Global Accelerator cost?

Use it only where the latency and availability benefit for global users justifies the data transfer premium (real-time, latency-sensitive, non-cacheable traffic), use CloudFront instead for cacheable content (cheaper, and caching beats routing for static content), and be aware the premium scales with traffic. Applying it selectively where performance justifies the cost is the main lever.

When is Global Accelerator worth the cost?

For latency-sensitive applications with globally-distributed users, gaming, real-time applications, and APIs with global users where latency matters, since it gets traffic onto the fast AWS backbone sooner and provides fast failover and static anycast IPs. The performance gain justifies the premium there. For cacheable content, a CDN is usually the better and cheaper choice.

What is the difference between Global Accelerator and CloudFront?

Global Accelerator routes traffic onto the AWS backbone for better latency and availability, without caching, suited to non-cacheable, latency-sensitive traffic (real-time apps, APIs). CloudFront is a CDN that caches content at the edge, suited to cacheable content (static assets, cacheable pages). For cacheable content, CloudFront is cheaper since caching offloads origin; for dynamic traffic, Global Accelerator's routing helps.

Why is the data transfer premium the main cost?

Because the fixed hourly accelerator fee is modest, while the per-GB data transfer premium is charged on all traffic through the accelerator on top of normal egress. So at high traffic volumes, the premium accumulates and dominates the cost. This is why Global Accelerator is worth it only when its performance benefit justifies paying that premium on your traffic volume.

Does C3X estimate Global Accelerator cost?

C3X prices Global Accelerator from your Terraform, including the fixed hourly fee, so that appears before deploy. The data transfer premium depends on traffic volume through the accelerator, which you provide as a usage assumption to weigh the performance benefit against the premium cost.

What to do next

Price your global routing before you deploy. C3X reads your Terraform and prices your resources against a live catalog. Start with the quickstart.