For parallel operations this is not a factor, but consider when a transaction is serial and information from one service call may be needed by another.

对于并行操作，这不是一个因素，但考虑当事务是串行的且来自一个服务调用的信息可能是其他服务调用所需时。

youdao

How to switch a call to one service between many services?

如何在多个服务之中将调用切换到某个服务？

youdao

Here again comes the routing challenge: how to call one service among many?

这里再次遇到了路由挑战：如何调用多个服务中的一个？

youdao

He selects one and can then instantly conduct a three-way conference call via Skype and pay for the translation service via PayPal.

FORBES: The New Skype-EBay Ecosystem

One of my clients, a physician whom we shall call Dr. A, used a well-known payroll service company in his medical practice.

FORBES: Tips for Payroll Outsourcing