Hello @Wai Keat C. ,
For physical servers , City of the server is mentioned as DC location .
For virtualized infrastructure , DC is detected from vmware , AWS , Azure .
PLease refer below link from official documentation :
As a simple test , you can install oneagent in your local machine and point it o DYnatrace SAAS instance and it will show you your machines's oneagent residing in a DC(name of your city).
Also, if you set up IP ranges in Settings -> Web & mobile monitoring -> Map IP addresses to locations and your hosts fall into those IP ranges, it will also determine that location as a Datacenter. This is a manual way of defining your own Datacenter configuration in Dynatrace.