We can combine the Scatter-Gather with the Composed Message Processor (294) to process each incoming order, sequence it into individual items, pass each item up for a bid, aggregate the bids for each item into a combined bid response, and then aggregate all bid responses into a complete quote. This is a very real example of how multiple integration patterns can be combined into a complete solution. The composition of individual patterns into larger patterns allows us to discuss the solution at a higher level of abstraction. It also allows us to modify details of the implementation without
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