Upgrade and migrate Exchange Hybrid Management Server

Same domain?

* Build the new server and point the AutodiscoverInternalURI to the same setting as the existing server
* test connectivity to internet and other points in the domain
* when you’re ready to cut over point your internal DNS, external DNS, to the new server and run the hybrid configuration wizard – add the new server, remove the old one.
* test outlook connectivity and autodiscover

Done.