Why do I need a custom domain

[CXwudi]

1. platform Independence: we can freely switch from Vercel to other platform, as mentioned in If one day blog in vercel is inaccessable from China #19
2. better maintainess: one URL means can have a single base url, can have analytic that requires one domain only working
3. with Cloudflare, unblock china access at anytime

[CXwudi]

However, custom domain can expired one day. So when sharing the blog post, always mention the GitHub repo link