When Should You Use Layout Tab?
Because the Layout tab and the Tree tab provide the same capabilities for building a flow service, work in whichever page you find easier to use. You can easily switch between tabs when building a flow service. For example, you might find it easier to insert the flow steps and define the basic structure of a flow service in the Layout tab, but use the Tree tab to perform data mapping.
You might prefer to use the Layout tab if:
You find that building a flow service as a flow chart is easier than building a flow service as a sequence of statements. You might be able to more easily envision the processes a flow service performs if you view the flow service as a diagram instead of as a series of line-by-line steps.
You need to design a business process with someone unfamiliar with programming or unfamiliar with
webMethods Integration Server. People who are not familiar with programming might be more comfortable with flow charts.
You need to show diagrams of how the flow service works to management. (Flow services can be printed.)