Starting from April 10th, 2025, the URLs returned from the Direct Upload API may return URLs using a subdomain of mux.com instead of the existing storage.googleapis.com domain.
Over the coming weeks, the Direct Upload API will fully transition to only returning subdomains of mux.com.
You may need to make changes to your application if you are utilizing an allow-list of domains your application can connect to, such as a CSP.