1.
transfer; change of trains or buses
The act of switching from one train, bus, or transportation line to another during a journey.
2.
switching; changeover
Changing from one product, service, or system to another.
Usage
乗り換え is the noun form of the verb 乗り換える. Sense 1 (transportation transfer) is the most common meaning. Sense 2 (switching services) has become common in marketing contexts.
Common collocations
Related Words
Related:
車内放送 (in-vehicle announcement)
Related:
機種変更 (phone upgrade)
Compare:
乗換案内 (transfer guide)