This article is part of Arc’s requirements management software comparison library, where every shortlisted approach is assessed with the same programme-level criteria.
DOORS is often a continuity decision; Polarion is often an ALM operating-model decision. An established IBM baseline, supplier exchange or DXL report can be harder to replace than a requirements editor. Polarion can be attractive when software lifecycle work is moving into a shared Siemens environment. This Arc-authored comparison is based on published documentation and a proposed evaluation method.
Are we evaluating DOORS or DOORS Next?
Classic DOORS modules and DXL-dependent processes are different from DOORS Next in IBM ELM. List the actual modules, link modules, baselines and reports in scope. A procurement table that says only “IBM DOORS” cannot reveal whether Polarion would replace a legacy repository, a web application or a wider lifecycle estate.
What does Polarion add?
Polarion ALM is built around connected work items and application lifecycle processes. That breadth is valuable if software teams, test teams and requirements owners will adopt the same governance. It is overhead if a small subsystem only needs controlled requirements and evidence. Check licence and configuration assumptions for the proposed edition.
How do both handle a supplier change?
In a synthetic radio payload, a supplier updates a frequency stability requirement. Receive the changed specification, trace it to system allocation and an environmental test, then approve or reject it against the existing baseline. Test the supplier's required exchange format and whether link direction, old revisions and acceptance decisions survive. Repeat with the actual IBM application, not a generic DOORS demo.
What should decide the choice?
Keep DOORS when contractual exchange, history and institutional practice dominate. Choose Polarion when the wider Siemens ALM strategy is explicit and the full change chain works for engineers. Include migration and training in both cases. Arc is a third option for a contained space programme seeking reviewable parallel change, provided required exchange is proven.
Frequently asked questions
Does Polarion automatically import a DOORS history?
No blanket assumption is safe. Test content and links separately from historical approvals, reports and baseline meaning.
Why distinguish DOORS Classic and DOORS Next?
Their architecture and workflows differ, so the migration and comparison criteria depend on the exact IBM application.
When should DOORS remain?
When supplier exchange, validated reports or controlled historical baselines create more value than switching tools would recover.
Apply this engineering method in Arc
Arc connects requirements to systems and interfaces, records controlled review decisions and maintains verification evidence against the relevant configuration. Bring one representative requirement set to evaluate this method.
Luc will email from luc@archelps.com to arrange setup. Agree scope and data handling before adding programme information.