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Product versus project life cycle
Short answer
A project life cycle covers temporary phases to deliver an output, ending with handover, while the product life cycle spans the product's entire existence from introduction to retirement. The project is part of the product life cycle, which may involve multiple projects for development and upgrades.
What are the differentiation between product life cycle and project life cycles?
A project life cycle is the set of phases a project goes through to deliver a product, service or result. A product life cycle covers the whole life of the product, from conception to its withdrawal, and may include many projects.
| Basis | Project life cycle | Product life cycle |
|---|---|---|
| Meaning | Phases of the project to create the product | Phases of the product's whole existence |
| Duration | Short, temporary, with a definite end | Long, may be many years |
| Typical phases | Initiating, planning, executing, monitoring, closing (or concept, development, implementation, close-out) | Introduction, growth, maturity, decline (or planning, development, operation, retirement) |
| Focus | Delivering the output within scope, time and cost | Market success, usage and profit over time |
| Managed by | Project manager | Product/business manager |
| Ends with | Hand-over and project closure | Product retirement or withdrawal |
| Relation | Part of product life cycle | May contain several projects |
| Goal | Efficient delivery | Sustained revenue or value |
| Example | Building version 1.0 of a mobile app | App launch, growth in users, updates, eventual shutdown |
Relationship
- A product's life can include several projects: one to develop it, others for upgrades, maintenance or retirement.
- In software, the system development life cycle (SDLC) is the product life cycle, while the project life cycle is the management of the work to complete a phase or release.
Product: Concept -> Develop -> Operate -> Retire
|__ Project 1 __| |_P2_|(upgrade) |_P3_|
Example: A telecom company's SIM card app is introduced, grows, matures and is later replaced. Each upgrade is a separate project with its own life cycle.
✓ Answer checked by Claude Opus 5.5 (high effort)
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