New developments in product-line optimization New developments in product-line optimization Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2015-11-042011enProduct development is key to profitability. Without well-designed products that meet the needs of customers at a reasonable cost, the firm has no sales. And without sales, the firm has no profit. But designing profitable products is hard. Eppinger, et al. (1994) estimate that for a mod- erately complex electro-mechanical product, close to a million decisions must be made before the product is brought to market. Many of these decisions are routine, but many are not. The two product-line-optimization papers in this journal address hard decisions.http://creativecommons.org/licenses/by/4.0/International Journal of Research in Marketing12826-27 John R. Hauser Matsatsinis Nikolaos Ματσατσινης Νικολαος Marinakis Ioannis Μαρινακης Ιωαννης Marinaki Magdalini Μαρινακη Μαγδαληνη Finance, Personal--Marketing Marketing of financial planning services financial planners marketing finance personal marketing marketing of financial planning services