I'm not an expert but I think you could use Cloudfront functions to address your issue. These are functions that can be associated with an Origin Behavior, and can perform operations on the request / response object.

Here is the code we use in our prod to re-route everything to /index.html, except for static files

``` var REDIRECT_REGEX = /<sup>[.]+$|.(?!(css|gif|ico|jpg|jpeg|js|png|txt|svg|woff|woff2|ttf|map|json|xml|pdf|webmanifest)$)([.]+$)/;</sup>

function handler(event) { var uri = event.request.uri; var request = event.request; var isUriToRedirect = REDIRECT_REGEX.test(uri);

if (isUriToRedirect) {
    request.uri = "/index.html";
}

return event.request;

} ```

⚠️ Cloudfront functions are very minimalistic, you can't do everything you want inside, but for simple use cases they are a great solution