BizTalk Server 2006 Development
From functoids to custom pipelines, Microsoft BizTalk Server 2006 provides many ways for you to extend, enhance, and customize your applications to meet business requirements. BizTalk Server 2006 includes a rich .NET API, a new flat-file wizard, failed message routing, in-order message delivery, and a collection of samples that demonstrate basic and advanced development techniques.
Resources in the BizTalk Server Documentation
Orchestrations in BizTalk Server 2006
Orchestration is a flexible, powerful tool for representing your executable business processes. You can design flow, interpret and generate data, call custom code, and organize it all in an intuitive visual drawing. This page organizes the different resources you can use to learn about developing, deploying and maintaining Orchestrations in BizTalk Server 2006.