How to Get and Optimize Alibaba Cloud ESA Free CDN – A Complete Guide

1. Overview of Alibaba Cloud ESA Free Tier

Alibaba Cloud ESA free tier provides unlimited traffic, global acceleration nodes, and basic security protection, making it an attractive option for personal blogs, small‑business websites, and developers.

2. Application Process

Visit the ESA free‑tier promotion page:

https://tianchi.aliyun.com/specials/promotion/freetier/esa?taskCode=25254&recordId=c9388cf6ae3d783bbc0c7a008fd6bc55

Complete Alibaba Cloud account verification.

Claim the free package.

3. Acceleration Region Options

Global Acceleration: Requires ICP record, provides worldwide CDN nodes including China mainland, suitable for sites with both domestic and overseas users.

China Mainland Acceleration: Requires ICP record, only China mainland nodes are available, overseas users cannot access when enabled.

Global (Excluding China): No ICP required, nodes are overseas only, higher latency for China users, ideal for overseas‑focused sites.

4. Basic Configuration and Usage Guide

1. Domain Integration

Add the primary domain to the ESA console.

Follow the wizard to set the DNS CNAME record to the address provided by ESA.

2. Special Port Configuration

Enter the "Origin Configuration" menu.

Add custom port rules for non‑standard ports (e.g., Docker containers).

Set the correct origin hostname.

3. Cache Rule Optimization

Static resources (JS, CSS, images) should have long cache times.

HTML files can be set to short cache or no cache.

Customize cache policies based on business needs.

5. Free Renewal Tips

Visit the package management page: https://esa.console.aliyun.com/billManage/packageManagement Click the "Renew" button.

Set the renewal rule to automatic.

Select the "0‑yuan renewal" option.

6. Performance and Comparison

Speed Performance

Domestic nodes: latency typically 10‑30 ms, noticeable acceleration.

Overseas nodes: latency varies 50‑150 ms depending on location.

TCPing tests show wide coverage of major cities.

Competitor Comparison

Vs Tencent EdgeOne: Both offer unlimited free traffic; ESA provides richer configuration options but has a steeper learning curve, while EdgeOne’s UI is simpler.

Vs Cloudflare: Cloudflare free tier requires no ICP and is friendlier to overseas sites; Cloudflare’s security features are more comprehensive, whereas ESA excels in customization and domestic speed.

7. Summary and Recommendations

Alibaba Cloud ESA free CDN delivers high‑quality acceleration and basic security for ICP‑registered sites, with unlimited traffic and a renewable zero‑cost model, making it ideal for small‑to‑medium websites.

Suitable Audience

Personal blogs or small business sites that have completed ICP registration.

Websites serving both domestic and overseas users that need balanced performance.

Sites that require basic protection against simple attacks.

Usage Recommendations

Configure appropriate cache rules to maximize CDN benefits.

Enable essential security rules to improve site safety.

Regularly monitor traffic usage to ensure stable service.