[求助]谁能帮我看看这两个句子的结构啊？

云计算很火哇 第一个 established through 修饰service-level agreements 第二个 which指a specific service-level agreement 【 在 Ladan 的大作中提到: 】 : A Cloud is a type of parallel and distributed system consisting of a collection of inter-connected and virtualised computers that are dynamically provisioned and presented as one or more unified computing resources based on service-level agreements established through negotiation between the service provider and consumers. : 这个句子的 based on 和 established through 到底是修饰谁的啊？ : Clouds are clearly next-generation data centers with nodes “virtualized” through hypervisor technologies such as VMs, dynamically “provisioned” on demand as a personalized resource collection to meet a specific service-level agreement, which is established through a “negotiation” and accessible as a composable service via “Web 2.0” technologies. : ...................

【 在 acewhj 的大作中提到: 】 : 云计算很火哇 : 第一个 : established through 修饰service-level agreements : ................... 谢谢啊

赞 补充：based on修饰的 provide这个动作 【 在 acewhj 的大作中提到: 】 : 云计算很火哇 : 第一个 : established through 修饰service-level agreements : ...................