PDM vs PLM: which does a small hardware team need?
PDM manages engineering files: CAD check-in and check-out and revision history. PLM manages the product around those files: BOMs, change orders, suppliers and production. Most hardware teams under about 20 people need disciplined file control first and PLM later, when BOM and change volume outgrow spreadsheets.
The short difference
| PDM | PLM | |
|---|---|---|
| Manages | CAD files, drawings, metadata | Parts, BOMs, changes, suppliers, quality, lifecycle |
| Main users | CAD owners | Engineering, operations, purchasing, quality |
| Core features | Check-in/check-out, revision history, vault | BOM management, ECR/ECO workflows, item lifecycle, supplier access |
| Typical examples | SolidWorks PDM Standard and Professional, Autodesk Vault | Arena, Duro, Teamcenter, Windchill |
| Setup | Server or cloud vault, CAD add-in | Data model, part numbering, workflows, imports |
Sources: TechTarget, Duro.
In short, PDM covers engineering data, while PLM covers requirements, design, manufacturing and service across the product's life (Duro). PDM answers "which file is current?" PLM answers "what are we building, from which parts, and who approved the last change?"
What a 5 to 40 person team actually needs, by stage
Prototype (first builds, 1 to 3 CAD users)
You need a released folder, a naming rule and one release owner. A shared drive with a written routine is enough. Cloud CAD such as Onshape builds versioning into the tool (Duro).
Pilot and tooling (3 to 6 CAD users, first suppliers)
Overwrites and wrong-revision sends start here. This is the point where PDM pays off. SolidWorks PDM Standard is included with SolidWorks Professional and Premium. It allows one workflow with up to 10 states and runs on Microsoft SQL Server Express, which limits the database to 10 GB (Javelin).
Production and sustaining (BOMs over a few hundred lines, several suppliers)
Here the pain shifts from files to the product: BOM changes, part substitutions, which suppliers have which revision, and change approvals. Common triggers for PLM are multiple product variants, frequent ECOs, distributed teams and regulated industries (Wave PLM).
Signs you need PDM
- Two people have edited the same file and one lost work.
- Someone sent a supplier a working copy instead of the release.
- Finding the drawing that matched a shipped build takes more than a few minutes.
- You have three or more people editing CAD at once.
Signs you need PLM
- Your BOM lives in a spreadsheet that several people edit, and nobody trusts it.
- Changes need sign-off from engineering, operations and quality, and approvals happen in email.
- Purchasing has ordered parts from an old BOM.
- A customer or regulator asks for change history you can't produce.
What neither one fixes
PDM and PLM record what changed and who approved it. Neither one, on its own, captures why: the test result, the supplier call or the chat thread behind a change.
And people outside CAD, like electrical engineers, firmware engineers and suppliers, often still review through exported PDFs and screenshots because they don't have seats in either system. Plan for how those people will see the part and leave feedback, whichever system you pick.
Cost and time to expect
Budget for licenses, a server or hosting, and setup time from your CAD owner. PDM Standard comes with SolidWorks Professional and Premium (Javelin), while PDM Professional is bought separately. PLM rollouts take longer because the team has to agree on part numbering, a BOM structure and change workflows before the software is useful. This page gives no prices because they change and depend on reseller quotes.
A practical path
- Write down a release routine now, even on a shared drive.
- Add PDM when overwrites or wrong-revision sends start, usually around three CAD users.
- Add PLM when the BOM and change approvals, not the files, are what break.
- At each step, decide how people without CAD seats will see and comment on the part.
FAQ
Is SolidWorks PDM a PLM?
No. SolidWorks PDM manages CAD files, revisions and workflows inside engineering. PLM adds BOMs, change orders across departments, supplier collaboration and lifecycle management.
When should a hardware startup buy PLM?
Usually when the BOM and change approvals break, not the files: frequent ECOs, multiple variants, several suppliers, or regulatory requirements. Many teams start with PDM and add PLM later.
Do I need a formal ECO process at a 10-person company?
You need a written record of each change, its reason and who approved it. A lightweight form or revision block note is often enough until several departments must sign off.
What is the difference between ECR, ECO and ECN?
An ECR proposes a change, an ECO approves and defines it, and an ECN communicates it to the people who must act. Companies use the terms inconsistently, so check your own procedure.
Related questions
- How do you do revision control without PDM?
- How do I make sure my supplier builds the right revision?
- How do I share a SolidWorks file with someone who doesn't have SolidWorks?
- How do I document why a part was designed a certain way?
Sources
- TechTarget, PLM and PDM differences: https://www.techtarget.com/enterprise-software/tip/PLM-and-PDM-software-Learn-the-differences
- Duro, PDM vs PLM: https://www.durolabs.co/blog/pdm-vs-plm/
- Javelin, SOLIDWORKS PDM Standard: https://www.javelin-tech.com/3d/solidworks-pdm-standard/
- Wave PLM, when to switch: https://blog.waveplm.com/when-to-switch-from-pdm-to-plm-signs-your-team-has-outgrown-pdm-tools/
Kyumi is building one place for the part, for the engineers who design it and everyone who builds it. Join the waitlist.