Actually this is a common pattern in enterprise IT where you need to integrate heterogeneous apps (i.e. at least one of the app is "legacy"). E.g. at my job th

Actually this is a common pattern in enterprise IT where you need to integrate heterogeneous apps (i.e. at least one of the app is "legacy"). E.g. at my job the main system (the one "selling" stuff to customer and managing inventory of this "stuff") routinely sends production data to the datawarehouse, the accounting system, sends invoices and confirmations to a document management systems for formatting and sending (via email). And considering both how old it is, and the fact that the data can be large-ish... most of this is sent out as files. This also mean that the various consumers need some sort of trigger to start processing the data.