Software life cycle typically includes the following phases:
1 software program and feasibility study (problem definition, feasibility study)
needs analysis
3 software design (preliminary design and detailed design)
4 program code
5 software test
run and maintenance 6
Possible cross-cutting between stage 1 of the project life cycle, and the product life cycle stages usually do not cross each other;
Project life cycle: the initial project -> project -> Project Execution Control -> end of the project;
the product life cycle: the investment period -> growing -> saturation period -> recession;
2. The end of the project life cycle and the end of the product life cycle different;
The last project is the end of the process are summarized;
the end product is the final product of death;
3. project life cycle may include multiple product life cycles;
A product's life cycle may include a plurality of the project life cycle, product life cycle is longer than the project life cycle.
A typical product life cycle can generally be divided into four stages, namely investment, growth, and saturation of recession
1. The investment period. ** new products to market, will enter the investment period. ** In this case, customers do not understand the product, the pursuit of novelty only a small number of customers may purchase, sales volume is very low. To expand the market, it requires a lot of marketing costs, product publicity. At this stage, due to technical reasons, the product can not be mass-produced, thus high costs, slow sales growth, corporate profits, instead of getting, but may be a loss. Products also be further improved.
2. growing. At this time customers are already familiar with the product, a large number of new customers started buying, the market gradually expanded. Mass production of products, production costs are relatively lower, the company's sales increased rapidly, profits are growing rapidly. See profitable competitors, we will have entered the market to compete, so that similar products increased supply, prices fall, corporate profit growth is slowing, and finally reach the highest point of the life cycle profit.
3. saturation period. Market demand is becoming saturated, potential customers have been very few sales slow growth until the turn to fall, marking the product entered a mature stage. At this stage, gradually intensified competition, lower product prices, increased promotional costs, corporate profits decline.
4. recession. With the development of science and technology, new products or new substitute appearance, will make the customer's consumption habits change, turn to other products, so that sales and profits of the original product's rapid decline. Thus, the product has entered a recession.
