https://traceunified.com/guides/ Guides on requirements traceability, compliance, and lifecycle engineering for regulated, safety-critical teams. en-us https://traceunified.com/guides/design-history-file-qmsr/ https://traceunified.com/guides/design-history-file-qmsr/ Fri, 26 Jun 2026 00:00:00 GMT What a Design History File is, what belongs in it, and how the FDA's QMSR transition (effective February 2026) renames it to the Design and Development File under ISO 13485 — with the underlying design-control requirement unchanged. https://traceunified.com/guides/what-is-application-lifecycle-management/ https://traceunified.com/guides/what-is-application-lifecycle-management/ Fri, 26 Jun 2026 00:00:00 GMT A clear introduction to Application Lifecycle Management — what ALM covers, how it differs from project or just requirements management, why traceability is its backbone, and what ALM means for regulated, safety-critical development. https://traceunified.com/guides/iso-26262-traceability/ https://traceunified.com/guides/iso-26262-traceability/ Thu, 25 Jun 2026 00:00:00 GMT How ISO 26262 builds functional safety into automotive development — ASILs, the safety lifecycle and V-model, and the traceability that links safety goals through requirements to verification evidence. https://traceunified.com/guides/do-178c-requirements-traceability/ https://traceunified.com/guides/do-178c-requirements-traceability/ Wed, 24 Jun 2026 00:00:00 GMT How DO-178C structures airborne software assurance — design assurance levels, the requirements hierarchy, bidirectional traceability, and requirements-based testing — and why trace data is the backbone of certification. https://traceunified.com/guides/writing-clear-requirements-ears/ https://traceunified.com/guides/writing-clear-requirements-ears/ Wed, 24 Jun 2026 00:00:00 GMT A practical guide to writing clear, testable requirements using EARS (Easy Approach to Requirements Syntax) — the five patterns, examples of each, and how structured requirements make verification and traceability far easier. https://traceunified.com/guides/iec-62304-software-lifecycle/ https://traceunified.com/guides/iec-62304-software-lifecycle/ Tue, 23 Jun 2026 00:00:00 GMT How IEC 62304 structures medical device software development — software safety classes A, B, and C, the lifecycle processes it requires, its link to ISO 14971 risk, and why traceability ties the whole thing together. https://traceunified.com/guides/choosing-requirements-traceability-software/ https://traceunified.com/guides/choosing-requirements-traceability-software/ Mon, 22 Jun 2026 00:00:00 GMT A vendor-neutral framework for evaluating requirements and traceability tools for regulated, safety-critical work — the criteria that matter, the architectural question behind them, and the questions to ask every vendor. https://traceunified.com/guides/fda-21-cfr-part-11-guide/ https://traceunified.com/guides/fda-21-cfr-part-11-guide/ Mon, 22 Jun 2026 00:00:00 GMT What 21 CFR Part 11 requires — electronic records, electronic signatures, audit trails, validation, and access controls — how the QMSR transition affects it, and what "Part 11 compliant" software really means. https://traceunified.com/guides/sbom-fda-cybersecurity-524b/ https://traceunified.com/guides/sbom-fda-cybersecurity-524b/ Sun, 21 Jun 2026 00:00:00 GMT What a software bill of materials is, why FDA Section 524B now requires one for cyber devices, what a compliant SBOM contains, and how connecting it to your requirements and risk turns it from a list into a vulnerability-impact tool. https://traceunified.com/guides/what-is-a-requirements-traceability-matrix/ https://traceunified.com/guides/what-is-a-requirements-traceability-matrix/ Sat, 20 Jun 2026 00:00:00 GMT A plain-English guide to the requirements traceability matrix — what it is, what belongs in it, the forward and backward links that make it work, and why it matters for regulated, safety-critical development.