More Reading On Event-Driven Architecture
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Understanding Event-Driven Architectures (EDA) by Telmo Subira Rodriguez.
One of the main difficulties when developing an EDA-based solution is that there is not any dominant development framework yet.
That quote, mapped to the Gartner Hype Cycle, sums up my feeling on the current state of Event-driven Architecture... exciting and immature and the right questions are both whether to engage, and whether to engage now.