Accelerate your site in China. Legitimately.
Keep the enterprise stack your team already ships on. The 21YunBox Optimizer is a platform-agnostic overlay that makes your existing sites, apps and APIs — Sitecore, AEM, Optimizely, Contentful or any DXP — fast and compliant behind the Great Firewall. No re-platforming.
Trusted by global enterprises operating in China
Outside China, everything works. Inside, the same site often never finishes loading at all, key third-party services are blocked, and hosting without a license carries real regulatory risk.
Outside China, everything works. Inside, the same site can take 57+ seconds to fully load, key third-party services are blocked, and hosting without a license carries real regulatory risk.
Painfully slow
58s+ or never finishes 57+ s fully loadedSilently broken
Video, payments, analytics, fonts and CMS delivery you rely on are throttled or blocked outright — so users in China see blank sections and abandoned checkouts.
Blocked third partiesLegally exposed
Without a valid ICP license your site can’t legitimately run on Chinese servers or CDNs — and getting the wrong one burns weeks and thousands of dollars.
ICP & compliance riskOne overlay between your origin and China
You don’t move servers or rewrite code. The Optimizer sits in front of your existing deployment as a compliant, accelerated China delivery layer.
Platform-agnostic. Purpose-built for enterprise DXP.
Adobe Experience Manager, Sitecore, Optimizely, Contentful, Salesforce, SAP — whatever your teams already run, the 21YunBox Optimizer makes it fast and compliant in China. No re-platforming, no parallel China build.
DXP · AEM Cloud & Edge 
DXP · XM Cloud · XP 
DXP · Experimentation 
Headless CMS 
Commerce Cloud 
Commerce Cloud 
Drupal DXP 
Commerce Experience Headless or monolith, commerce or content — one compliant overlay for all of them.
317 technologies tested in ChinaYour whole team keeps moving — in China too
Ship your modern frontend, unchanged
Next.js, React or Vue load instantly in China. Keep Vercel/Netlify and your global CDN; the overlay resolves blocked third-party assets automatically.
For frontend developersDynamic APIs, accelerated
Stop trying to cache dynamic endpoints. Our cross-border network speeds two-way traffic to your global backend — no databases mirrored in China.
For backend developersThe right licenses, the first time
Get the correct ICP and related licenses to host legitimately. Experts in English, Japanese and Chinese — integrate ICP on your site in ~10 minutes.
For legal & complianceAnalytics you can trust
Server-side, fully compliant with China’s Cybersecurity Law, and free of the client-side data loss that makes third-party analytics misleading in China.
For marketersPublish once, reach 1.4B
Keep your existing headless CMS. Click “Save” on your global workflow and the Optimizer routes and accelerates content to Mainland China in minutes.
For content teamsNot sure where you stand?
Run a free test to see exactly how your site performs behind the Great Firewall — no signup.
Test your siteWhat acceleration looks like in China
Measured from five Chinese cities, origin-only vs. through the Optimizer. Run a free test to get your own site’s real numbers.
Fully loaded time — measured
21YunBox probes · July 2026
| City | Origin only | With Optimizer | Improvement |
|---|---|---|---|
| Shanghai | 58.0s | 3.8s | 15.3× faster |
| Beijing | Did not finish | 3.2s | >37× faster |
| Shenzhen | Did not finish | 3.3s | >36× faster |
| Chengdu | Did not finish | 3.0s | >40× faster |
| Guangzhou | Did not finish | 2.7s | >44× faster |
Built on every major cloud in China
Advanced delivery, compliance and security functionality layered on top of the leading Chinese cloud providers — so your traffic always takes the fastest legitimate path.
Ready to launch in China with confidence?
Join 5,000+ developers and enterprises delivering fast, legitimate experiences behind the Great Firewall.
No re-platforming · ICP handled · keep your existing stack
