The answer
No. Identity-provider callbacks, storage CORS policies, hosting redirects, and email-domain configuration can live in separate services. Review each integration that uses the public hostname.
Why must application environment variables be updated after changing domains?
Are all domain-related settings stored in application environment variables?
More FAQs in Why must application environment variables be updated after changing domains?
No. Update settings that actually depend on the hostname. A database password normally changes for credential rotation or a service change, not for domain branding.
The application may generate links from an unchanged public base URL or an older deployment's configuration. Trace that setting and deploy the corrected production values.
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