HTTP/3 CDN
Modern transport on every point of presence.
TCP handshake cost still shows up on mobile and lossy networks. HTTP/2 helps; HTTP/3 over QUIC reduces that cost further when the edge supports it everywhere.
Cloud CDN speaks HTTP/3 and HTTP/2 at 210+ PoPs, with TLS 1.3 and 0-RTT. Browsers that cannot use HTTP/3 fall back cleanly.
Why teams use Aptranet
What HTTP/3 CDN looks like on this network.
Cloud CDN caches and accelerates eligible content on 210+ points of presence, with Origin Shield when the origin must stay out of the way.
HTTP/3 at the edge
QUIC reduces handshake and head-of-line blocking compared with TCP-only delivery.
TLS 1.3 with 0-RTT
Session resumption shortens repeat connections without a separate TLS product.
The same protocol map worldwide
You do not enable HTTP/3 in one region and forget it in another.
How to set it up
A cutover you can validate before DNS moves.
Create the Cloud CDN configuration, prove it on an Aptranet hostname, then point production DNS when the path looks correct.
- 1Put the site on Cloud CDN
HTTP/3 is part of the delivery path, not a bolt-on hostname.
- 2Keep origin HTTP/1.1 or HTTP/2 as you prefer
The browser talks HTTP/3 to the edge. Origin protocol is independent.
- 3Verify in the client
Confirm protocol negotiation on a test hostname before cutover.
- 4Measure asset waterfalls
Fonts, JS and images benefit first on high-latency links.
Outcomes
What changes once the hostname is on Aptranet.
- Browsers can use HTTP/3 to the edge
- HTTP/2 remains available as fallback
- TLS 1.3 is on the public hostname
- Origin protocol does not have to change
Keep reading
Related pages
More CDN use cases on the same Cloud CDN footprint.
Frequently Asked Questions
Current browsers do. Clients that do not support it use HTTP/2 or HTTP/1.1 to the same hostname.
No. HTTP/3 is between the client and Cloud CDN.
Yes for clients that speak it, including many mobile stacks. Cacheable GETs still benefit from being cached.
If QUIC is blocked, browsers fall back to HTTP/2 over TCP. The site still loads.