The update involves changing DNS to point to new server instances in AWS. DNS TTL (Time To Live) is set to 1 minute, but your local DNS server may take more time to be updated. Database replication is in place to enable migration of users and clients. However, you may need to re-authenticate any active sessions.
The CILogon test servers have already been migrated to AWS:
We would appreciate your assistance in testing before production server are migrated. If you have an OpenID Connect (OIDC) client, you can change your client's OIDC discovery endpoint to https://test.cilogon.org/.well-known/openid-configuration . If you have an OAuth2 client, you can configure the various test endpoints as follows: