Adding a subdomain for redirects

Yes, you should be able to do that. You’ll need to update the DNS records so the old subdomain’s CNAME points to the new Marketo instance.

Once that’s configured, recreating the URLs in the new instance using the same slugs should allow traffic to resolve correctly. From there, you can manage the appropriate redirects.

Just make sure to allow time for DNS propagation and validate that traffic is resolving correctly before relying on it.

While ​@derisherrera is right that it should work, there’s a notable case where it doesn’t.

If CloudFlare (the reverse proxy/CDN layer that’s automatically provisioned by Marketo) is still pointing to the old origin, it won’t matter whether everything else DNS- and redirect-wise is in place because it’ll try to fetch from the decommissioned server.

Marketo doesn’t always reset the CloudFlare config when an instance is decommissioned, and we’ve seen this exact problem. So it may also take a support ticket. But try it yourself first.

This will NOT work if:

• The old subdomain DNS was deleted

• The company no longer owns that domain

• The old subdomain was a root domain (like www.oldcompany.com)

• The old instance had SSL managed through Marketo and it’s no longer active

If SSL was previously Marketo-managed, you may need to:

• Re-provision SSL in the new instance