New Product Introduction (NPI) is the cross-functional process that turns a design-complete chip into something a factory can actually build in volume, at yield, at cost, and on schedule. It borrows its skeleton from the generic "stage-gate" model used across hardware industries, a sequence of gated readiness reviews, but semiconductor NPI has sharper teeth than most, because the "manufacturing line" here is a multi-billion-dollar fab whose corrections take quarters, not days.
A bug caught in a software product costs a patch release. A design flaw caught after a chip is already in a foundry's production flow can cost months of respin time and tens of millions of dollars in mask and wafer costs. If it's caught even later, after packaging or in the field, the cost multiplies again. NPI exists to catch manufacturability problems as early and as cheaply as possible, before they're baked into a mask set.
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