SBM Orchestration Guide → Orchestration Concepts → About the Step Palette
One of the things that distinguishes the use of Web services in orchestrations, rather than in applications, is the availability of control flow structures. These control flow structures make it possible to design an orchestration workflow that can branch based on a value, make calculations based on returned results, iterate through a set of data, and perform many other tasks.
The control flow structures are available on the area known as the Step Palette. Each item in the Step Palette is known as a step.
The following table describes the steps on the Step Palette.
| Step | Purpose |
|---|---|
| Calculate | Performs a calculation or sets values on data. |
| Decision | Inserts branches into the workflow. |
| ForEach | Cycles through all members of a complex data element. |
| While | Repeats during the time a certain condition is true. |
| Service | Inserts a Web service into the workflow. |
| Group | Creates a structure to organize steps logically. |
| Scope | Creates a structure to handle faults that occur during the execution of a Web service. |
| Compensate | Defines steps that can compensate for a problem. |
| Throw | Defines steps to throw an exception. |
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