lecturer on demand; guest speaker on demand
Refers to a lecturer or speaker who is dispatched to a requested location, similar to a delivery service for lectures. Often used in educational or corporate contexts.
We invited a guest lecturer on demand for the company training.
We used a lecturer-on-demand service and had an expert give a talk.
Compound of 出前 (delivery) and 講師 (lecturer). The term likely originated from the concept of delivering a lecturer to a requested place, analogous to food delivery.