Client-server architecture server: always-on host permanent IP address server farms for scaling clients: communicate with server may be intermittently connected may have dynamic IP addresses *do not communicate directly with each other 2:Application Layer 8 2: Application Layer 8 Client-server architecture server: ❖ always-on host ❖ permanent IP address ❖ server farms for scaling clients: ❖ communicate with server ❖ may be intermittently connected ❖ may have dynamic IP addresses ❖ do not communicate directly with each other