No individual back end operation performs the required semantics of booking a "trip."

没有任何后端操作执行 “预订旅行” 这个语义。

youdao

Originally, the purpose of this header was to identify the intent of the request — the operation to be invoked on the back end.

最初，这个头主要是用来识别请求意图——后台所调用的操作。

youdao

In our example, the back end web service offers only one operation.

在我们的例子中，后台服务仅提供一个操作。

youdao

Why buy servers and hire people to run back-end services when you can simply outsource the whole operation and pay as you go?

FORBES: Cloud Computing Isn't For Everyone