At run time, the BizTalk Orchestration Engine executes XLANG/s files that are produced by BizTalk Orchestration Designer. Orchestration Designer is a rich graphical tool for visually designing business processes. It generates XLANG/s files that have an .odx extension and contain additional visualization information in their headers and custom attribute information in their bodies.

Note
XLANG/s can be viewed as a messaging language with some of the expression capabilities of C#.

The primary functions of the orchestration engine are:

• Persistence
  
  
• Hosting the .NET components
  
  
• Transactions
  
  
• Large message support
  
  
• Runtime validation
  
  
• Load throttling
  
  

 In This Section

• Persistence and the Orchestration Engine
  
  
• Orchestration Dehydration and Rehydration
  
  
• Runtime Validation for the Orchestration Engine
  
  
• Orchestration Engine Configuration
  
  

 See Also

Concepts

XLANG/s Language
How BizTalk Server Processes Large Messages

Other Resources

BizTalk Server Architecture
Optimizing Resource Usage Through Host Throttling