A PoC for Geographically Distributed WordPress Deployment

This site is hosted in a single AWS Lightsail instance in Japan West region, it has perfect performance when visiting from near by regions, however it has poor performance if visiting from another continent.

- Poor TTFB and LCP from US East and Europe
- Core Web Vital fails because of slow LCP, which impacts SEO performance.

I've been using WordPress to run this site for almost 10 years. WordPress have been a very successful software in blogging, CMS and even e-commerce. Comparing with static solutions, it takes more effort to optimize its performance, because of its "dynamic" nature.

I've done a lot of performance tuning for this site, and it already archived ~150 ms TTFB from nearby cities, it's not possible to optimize any further from the server...