Pair product rule

    From Consumerium development wiki R&D Wiki

    Defined by the domain of interoperability of mutual competing implementations:

    • always more than one prototype;
    • customer/consumer may always select alternative vendor.

    Also characterized by

    • customer/consumer imposed interoperability constraints: eg: Valid proposals must name 2 independent vendors + availability + pricing, whose product(s) meets the product specification.
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