Generation of new ideas: Ideas are gathered from different parties such as employers, consumers, competitors, etc. Screening of new ideas: All ideas are evaluated based on several criteria such as potential market size, cost, product development time to find the better ideas and in this stage poor ideas are eliminated. Concept development and testing: Consumers are included in the process to select the best concepts. Marketing Strategy Development: This step includes preparing plans and programmes for test marketing. Business analysis: Some analyses such as cost, demand, profitability are performed to prove potential economic success of new concepts. Product development programme: After completing the stages above, a prototype is developed. Test marketing: The new product may be tested in a small market such as a city before commercialization stage to see if there is a need to make changes in the product or in any aspect of marketing strategy based on the opinions of consumers. Commercialization and control: If all stages are completed successfully, the new product is launched to the market.