14. PaaS:云时代企业应用架构的核心 Era of the Mainframe Era of the Server Era of the Web Era of the Cloud Key Requirement Resource Utilization & On Demand PaaS Always on device, Virtualization Key Requirement Business Agility SOA + BPM Web 2.0 Key Requirement IT Flexibility & Reusability SOA Web Services Extend Enterprise Application Integration Key Requirement Integration MOM, Brokers, … Extend Business Requirements 3-Tier / Client - Server Key Requirement Productivity & Functionality SAP, PSFT, Oracle, … Replace Mainframe Technology Advances over Time
50. CloudTao- 部署架构 Management & Monitoring HA Proxy / F 5 Load balancer Gateway Processor Gateway Processor Gateway Processor Gateway cluster Service Processor Service Processor Service Processor Service Processor Service Processor Service Processor Processor Cluster Cloudset Cloudset …… …… …… Cloud Cloud Cloud Admin/Monitor/Service Repository Data Center 1 Dada Center 2 Infrastructure