We take it for granted when new products appear on the market. Perhaps they were made by elves! Well, they must have been made by someone, who followed a process. And that process was the New Product Development, or NPD, process.
The New Product Development process is now mature and well understood. There are many ways to articulate it, and none is that different from what mediaeval craftsmen would have used. But it’s still a big idea. And it’s an idea every manager should at least be familiar with.