A life cycle model, often referred to as a "life cycle model", is a concept that is used in various disciplines and industries. This model describes the life cycle of a product, project or idea from its conception to its completion or phase-out. It enables a structured and holistic view of how something develops over time.

In software development, for example, the life cycle model is used to describe the process of software development from planning and implementation to maintenance and updating. Well-known models in this context are the waterfall model, the agile model or the V-model. Each of these models defines how the various phases of the software development process are linked and how they are controlled.

The life cycle model also plays an important role in ecology and environmental sciences. Here it describes the cycle of organisms, materials or products in nature. This understanding is crucial for assessing environmental impacts and making sustainable decisions.

In marketing, the life cycle model is used to analyse the development of a product on the market. It is typically divided into the phases of introduction, growth, maturity and degeneration. This enables companies to adapt their marketing strategies to the respective phase in order to maximise success.

The life cycle model is therefore a versatile tool that is used in different contexts to understand and organise development processes, environmental impacts or market developments. It facilitates the planning, management and evaluation of projects and products and is therefore an indispensable instrument in modern business and science.