从资源提供者的角度来看，流媒体系统的资源层次结构主要由应用层、基础设施服务层、网络处理和存储资源三个层次构成。
From the source provider, the source layers of streaming media system consist in application layer, foundation layer, network processing layer as well as source storage layer.
架构原则也可能采用执行层决策的形式，比如，选择开源资产还是某软件厂商和服务器基础设施？
Architectural principles - for example, to prefer open source assets or certain software vendors and server infrastructures - might also take the form of executive decisions.
服务层被拆分为(自上而下)业务服务、基础设施服务和框架。
The services layer was decomposed into (from top to bottom) business services, infrastructure services, and framework.
服务层，提供云服务，如IaaS提供基础设施服务，PaaS提供中间件服务，SaaS提供应用服务。
Service Layer providing cloud services. IaaS is considered a service providing infrastructure along with PaaS offering middleware and SaaS providing applications.
服务层，提供云服务，如IaaS提供基础设施服务，PaaS提供中间件服务，SaaS提供应用服务。
Service Layer providing cloud services. IaaS is considered a service providing infrastructure along with PaaS offering middleware and SaaS providing applications.
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