If SSR + caching is already working well for you, you might not need ISR. And it likely also depends on the type of application you’re building. For example, if

If SSR + caching is already working well for you, you might not need ISR. And it likely also depends on the type of application you’re building. For example, if you need user auth on every request, generating static assets probably won’t work since they’re not personalized. One difference with ISR is that it’s durable, where your cache is not. You can persist the statically built pages to disk, like S3, and be able to roll back to old versions.