选播服务是一种新的网络服务模型 ，可以改善网络负载分布和简化某些网络应用。
The implementations of distributed anycast address and transmitted anycast data by network-layer anycast are also presented.
云端、LBS和社交网络服务的需求增长同样也在改变商业模型。
The increase in demand for cloud services, location-based services, and social networking is also altering the business model landscape.
Amazon日前引入了一种用于S3网络服务的新业务模型，称为访问者付费。
Amazon has introduced a new business model for its S3 web services called Requester Pays.
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