Excel<>FIX engine interface using JSON or BSON

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Many years back I worked on a project to link Excel to a FIX engine.The basic design was:

  • stateful middle-tier component executing the FIX engine in-process
  • middleware used to publish out FIXML to an Excel RTD component for reporting back to Excel
  • middleware used to send data to another component that flattened out the FIXML message and loaded it into a relational database.
  • COM Excel addin used to send orders from the Excel user interface in FIXML via middleware to the middle tier and from there to the FIX engine
Following on from some recent work and conversations I wonder if the right way to do this now would be to convert the FIX message to and from JSON (or BSON) and then push that around?

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