livssyklusfase

Livssyklusfase is a term used to describe a distinct stage within the life cycle of a system, product, process, organism or project. Each fase has specific goals, activities and deliverables, and marks a transition to the next part of the life cycle. The concept of life cycle phases helps organize work, planning and evaluation across different domains.

In biology and ecology, life cycle fases reflect development and reproduction. For many organisms the cycle includes stages such as birth or hatching, juvenile growth, maturation and reproduction, and ultimately death or senescence. Some species undergo metamorphosis, with additional phases such as larval or pupal stages. Environmental conditions, genetics and hormones influence when and how transitions between fases occur.

In engineering, product management and software development, life cycle fases structure the progression from idea to retirement. Common examples include concept or requirements, design and development, testing, deployment or launch, operation and maintenance, and eventual discontinuation or replacement. The identification of fases aids resource allocation, risk assessment, budgeting and performance evaluation.

The exact number and naming of fases vary by domain and model. Linear approaches (for example, traditional product development or waterfall software processes) tend to have fixed fases, while iterative or agile approaches revisit fases repeatedly. Regardless of the model, the concept of a life cycle fase provides a framework for planning, governance and continuous improvement.