SPIN sales technology does not need advertising, for the one who sells (especially the one who sells B2B) certainly recognizes Neil Wrekham's work "SPIN sales" as the cornerstone of big sales. And if in it Neil Wrekham dispelled the "eternal truth" preached by sales coaches that a sale is a sale - regardless of whether the vacuum cleaner is sold at the client's home or a computer system worth several million dollars, then in the book "SPIN-sales. Managing Big Sales," which has also become a bestseller, proves that managing large, strategic sales is a special matter.