Conclusion

Practitioners using QFD have a variety of methods to address the challenge of unprecedented productsproducts no customer is familiar with. Although most development projects are upgrades of existing products, sometimes something truly new must be developed. And QFD's powerful framework can still help.

The Theory of Constraints offers QFD practitioners a complementary set of methods that concentrate where QFD does notand vice versa. By using both approaches, you can analyze both the deal and the details to produce an unrefusable competitive producteven a brand-new product.