Product lifecycle management
Definition
Product lifecycle management
Product lifecycle management is the discipline of holding one controlled record of a physical product from first concept to retirement. It covers the parts list, the drawings, the design file and every change order, so you can prove what was built and why.
Product lifecycle management (PLM) is not the marketing life cycle curve of introduction, growth, maturity and decline — that curve describes demand over time.
This page is about the engineering record: what the thing is made of, who approved it, and which revision shipped on which date.
New product introduction sits inside the lifecycle described here. It takes a released design into volume production and ends at first shipment, while PLM keeps running through every revision until the product is withdrawn.
Key takeaways
- PLM is the controlled record of one product, from concept through to end of life.
- The bill of materials and the change order history are the two artefacts that matter most.
- New product introduction is one phase of the lifecycle, not a synonym for it.
- In regulated markets the product record is a legal deliverable, not internal paperwork.
How it works
PLM works by making one version of the product record authoritative and forcing every change through a controlled route. Each phase adds documents to that record, and nothing enters it without an approval that is dated and attributable.
| Phase | What the record must hold | Who signs it off |
|---|---|---|
| Concept | requirements and the intended use | product owner |
| Design | drawings, specifications, inputs and outputs | engineering lead |
| Verification | test results read against the design inputs | quality manager |
| Production release | the released parts list and the routing | manufacturing engineer |
| In service change | change orders, revisions, effective dates | change board |
| Retirement | last build date, spares plan, archived file | programme owner |
The bill of materials is the spine. Every part number, revision and supplier reference hangs off it, and a change to one line can invalidate a test result recorded three phases earlier.
Change orders are the dull thing that holds the whole system together — each one records what changed, why, from which serial number it applies, and who approved it.
In regulated markets the record is the product’s licence to ship, and a gap in it is a finding.
United States device rules now build on an international standard. Part 820 of title 21 incorporates ISO 13485 by reference and then adds record requirements on top of it.
Those added requirements are specific. Complaint records, servicing records and a unique device identifier for every device or batch all have to be kept, with each servicing entry naming the date, the person and the test data.
The shape of that part changed recently. The Food and Drug Administration’s Quality Management System Regulation took effect on 2 February 2026, and sections of the old numbering, such as 820.40, now read as reserved.
Serial and lot traceability closes the loop. When a defect shows up in the field, the record has to say which revision of which part went into which unit, and which supplier shipped it.
The discipline matters more than the software — a parts list kept in a spreadsheet beside the official record is the usual failure, because two versions of the truth are worse than one that is slightly out of date.
Two neighbouring records are worth keeping separate from the product file. Contract lifecycle management tracks agreements, while information lifecycle management tracks how long data is kept and when it is destroyed.
Customer life cycle management sits further away again, since it follows the relationship rather than the part.
Retirement is a planned phase, not an afterthought, much as application retirement is in software: you decide what gets archived, what stays supported, and for how long.
Examples
Medical devices. A device maker keeps the design history, the risk file and every change order against a single part number, so the thread from a user need to the test that proves it was met can be followed in one place.
Automotive and electronics. Design sits with the brand and assembly with a contract manufacturer, so the parts list has to mean the same thing in two companies and two systems at once.
Industrial equipment. A pump sold with a twenty year service life needs its drawings and spares list kept long after the last unit shipped, because the retirement phase is where support obligations actually live.
Most products outlive the people who designed them — the value of PLM shows up years later, when somebody has to answer a recall question or a spares request about a build nobody present remembers.
Smaller manufacturers rarely carry this discipline in house. The Manufacturing Extension Partnership, run by the National Institute of Standards and Technology, fields nearly 1,400 advisors across more than 450 service locations for small and medium sized firms.
Related terms
- Product outsourcing: handing design, build or both to a partner while keeping the record and the approvals.
- Contract lifecycle outsourcing: the same controlled handling applied to agreements rather than parts.
- New product introduction: the design to first shipment phase that sits inside the lifecycle.
- Contract lifecycle management: governs the agreement record, where PLM governs the product record.
- Application retirement: the software equivalent of the end of life phase, including what gets archived.
FAQ
What is product lifecycle management?
It is the controlled management of a product’s record from concept to retirement, covering requirements, design, the bill of materials, change orders and end of life. One version is authoritative and every change is approved.
Is PLM the same as the product life cycle curve?
No. The curve is a marketing model of demand over time. PLM is the engineering record of a specific product and the approvals attached to it.
What is a bill of materials?
It is the structured list of every part, assembly and quantity needed to build the product, held at a specific revision. Most PLM disputes are really disputes about which revision was current.
How does PLM relate to new product introduction?
New product introduction is the phase that moves a released design into volume production and ends at first shipment. PLM spans that phase and keeps going through service changes and retirement.
Who owns the product record?
Engineering usually owns the content and quality owns the control, even when the build is outsourced.
Find engineering and manufacturing support providers in the Outsource Accelerator directory before you move any part of the product record.
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