2. Host (.exe, Dublin-IIS/WAS,.NET Services, …) WF Runtime Extensions Tracking Persistence … … Tooling VS Designer VS Debugger Rehosted Designer Workflow Activity Library

3. Instruction Object Activity

4. Safety Memory Safety Memory Declarative Agility Declarative Agility

5. “…a leading computer scientist has warned that an easy solution to programming chips with dozens of processors has not yet been discovered.” - New York Times “…a leading computer scientist has warned that an easy solution to programming chips with dozens of processors has not yet been discovered.” - New York Times

10. Developer Tools Programming Model Application Services Relational Database Operating System Systems Management Applications

11. Activity Model & Runtime Control Flow Activities Flowchart Sequential State Machine Base Activity Library Messaging Custom Primitives Rules Error Handling

17. Service Activity Services provide communication among application nodes Activities provide implementation of application nodes

18. Applicant Service Education Service Reviewer 1 1 2 2 3 3 4 4 5 5 HR Data Persistence

20. Windows Server.NET Framework Windows Server AppFabric Services Management Tools IIS/WAS Workflows Runtime Databases Persistence Monitoring Hosting Persistence Caching Monitoring IIS Manager Modules PowerShell

21. AppFabric CACHING SERVICE BUSACCESS CONTROL MONITORINGWORKFLOW HOSTING SERVICE HOSTING SCALE OUTHIGH AVAILABILITYMULTI-TENANTMANAGEMENT

23. … Web Tier (ASP.Net) (ASP.Net) UsersUsers DatabaseDatabase CloudCloud Data Tier Application Caching Access Layer Caching Service Cache Tier