Products are living things: they are dynamic;Products also born old sick and die;Product managers need to assess the situation.The product life cycle can be divided into four stages: startup stage, growth stage, maturity stage and recession stage. In these stages, the number of users and the revenue also have significant changes:

1. Startup period: fewer users and less revenue

2. Growth stage: the stage with the fastest user growth

3. Mature stage: the stage with the largest number of users

In the lifetime of a product, it will go through many processes. The product manager should view the entire product life cycle from a dynamic perspective, define the core objectives of each stage and make correct product decisions.