Draw two paths
Map a user request to the application and the application to its database, object store, mail or API dependency. A server country can shorten one path while lengthening another.
Use the published choices accurately
Malaysia, Romania and Switzerland are selectable without a location surcharge. They do not disclose a facility, supplier, backup country or measured latency.
Example decision
A Southeast Asian audience and regional dependency may make Malaysia a sensible first test. A European dependency may make Romania or Switzerland the first candidate. Test from representative clients after deployment.
Record the reason
Keep the selected country, dependency endpoint, test location and observed result so a later migration has a factual trigger.