integrated or external

options depend on groupset choice
more integrated, great look
more external, easy service and transport

see below

Version EG-IB

external gear cable
integrated brake cable

see below

Version EG - EB

external gear cable
external brake cable

see below

Version IG or wireless - EB

integrated gear cable, wireless gear shifter
external brake cable

see below

Version IG - IB

no gear cable, or wireless
brake cable integrated