Any service can be separated and run on its own server. Commonly used config:
- Kazoo Servers: HAProxy, RabbitMQ, Kamailio SIP Proxy, Kazoo eCall Manager, Kazoo Applications, (Monster UI)
- Freeswitch Servers: HAProxy, Freeswitch
- Bigcouch Database Servers: Bigcouch or CouchDB (I use CouchDB v3.0)