另一个经常讨论的主题是，服务是同步的还是异步的，与编程模型相比，使用的通信协议充当什么角色。

Another subject of frequent debate is whether a service is synchronous or asynchronous, and what role the used communication protocol plays compared to the programming model.

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虽然有很多方法来编写软件，但是为了交换信息的目的，我们选择了发送消息的方式来加以实现，因为它本身就拥有同步与异步的优势。

Although there are many ways to write software, we chose messaging for this purpose, because it has the advantage of being both synchronous and asynchronous in nature.

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我们讨论了交流的方方面面：同步与异步，可视化，消息和邮件。

Multiple aspects of the communication were discussed: synchronous vs. asynchronous, visual, messaging and emails.

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