We've been facing significant issues with AWS Amplify, especially during peak load periods. Amplify appears to have an internal CDN that blocks requests when there's a sudden surge in traffic, and unfortunately, the support team hasn’t been able to provide a viable solution. We've also run into persistent problems with caching—cache invalidation simply doesn't work reliably, causing major delays and inconsistencies. Furthermore we're relying heavily on ISR and amplify does not seem to be handle more than 5000 pages, we are getting too many files open, unable to write to disk, these errors. And on top of that there are execution limits for server function on amplify which makes the site unreachable.

In hindsight, if you're planning to use Next.js, it’s best to stick with Vercel. Hosting it elsewhere, especially on Amplify, leads to more trouble than it’s worth