Hello!

1. The same point is that SSL certificates are spam for free.

2. The Pagoda SSL certificate is valid for 1 year (real name required), is a single domain name, and can only protect one primary domain name or secondary domain name.

3. Let's Encrypt is valid for 3 months (no real name), and is available in single domain name, pan-domain name, and multiple domain names.

4. Disadvantages of Let's Encrypt include low trust. Currently, browsers such as 360 Browser, Firefox, and World Window will prompt that it is unsafe.

5. Because of the low trust level, the two certificates of Pagoda are easy to review. One-click application and installation are suitable for learning.

Suggestions for commercial use: Obtain a formal CA SSL certificate and register it with Gworg (you can also find it on Taobao).