Product Life Cycle
The Product Life Cycle tracks a product through four stages - introduction, growth, maturity, decline - because what wins in one stage loses in the next.
Sales rise, plateau and fall across the four stages, tracing a single arc over time.
Reach for this when…
- Sales have flattened and you are not sure whether to invest or harvest.
- A tactic that used to work has stopped, and you want to know why.
- You are planning the next product before this one peaks.
How to run it
- Locate the product honestly: is it still being adopted, growing, holding, or slipping?
- Match the play to the stage. Introduction needs awareness; growth needs scale; maturity needs efficiency and defence; decline needs a harvest or exit decision.
- Watch the leading signals - repeat rates, price pressure, new entrants - that mark the shift to the next stage.
- Line up the successor before decline arrives, not after.
A worked example
Situation. PayFlow, a payments tool run by Aarav Sharma in Bangalore, India, had flat revenue and a team still piling on features.
Applied. Placed on the curve, PayFlow was deep in maturity, not growth, so more features were never going to move the needle.
Result. He stopped over-building, defended the customers he had, and started the next product while cash was still strong.
The catch
The neat curve is drawn after the fact; in the moment you rarely know which stage you are in, and some products never follow it at all. Read too literally, it can talk you into killing a product that just needs a new market. It is a lens, not a schedule.
The stage you think you're in is a story you tell yourself after the fact - in the room, it's a judgement call, not a measurement.