Handbook

PM approaches — reference links

Curated external URLs for the PM approach guides in this directory. Each entry includes an executive summary explaining why the link is included and what it contributes to understanding the approach in the context of…

Maintenance: When a URL breaks, find the replacement and update this file. Run curl -sI <url> | head -1 to verify HTTP 200.

PMI / PMBOK

Resource URL Executive summary
PMI — PMBOK Guide https://www.pmi.org/pmbok-guide-standards/foundational/pmbok Official PMBOK standard page — principles, performance domains, and purchasing information. The canonical source for PMI-based project management.
PMI — Agile Practice Guide https://www.pmi.org/pmbok-guide-standards/practice-guides/agile Official PMI guidance on Agile delivery within PM governance — co-developed with the Agile Alliance. Bridges the PMI and Agile communities.
PMI — Process Groups Practice Guide https://www.pmi.org/pmbok-guide-standards/practice-guides/process-groups Companion to PMBOK 7th ed for teams wanting the traditional process-oriented structure (Initiating → Planning → Executing → M&C → Closing).
PMI — What is Project Management? https://www.pmi.org/about/what-is-project-management Introductory definition of PM from PMI's perspective — useful for onboarding team members new to PM vocabulary.
PMI — Standards Library https://www.pmi.org/pmbok-guide-standards Full catalog of PMI standards: PMBOK, OPM3, benefits realization, requirements management, scheduling, risk, and more.
Wikipedia — PMBOK https://en.wikipedia.org/wiki/Project_Management_Body_of_Knowledge Neutral overview of PMBOK history, editions, and relationship to PMP certification — good starting point before the official standard.
Wikipedia — Project Management Institute https://en.wikipedia.org/wiki/Project_Management_Institute Context on PMI as an organization: founding, membership, certifications, global influence.

PRINCE2

Resource URL Executive summary
PeopleCert — PRINCE2 https://www.peoplecert.org/prince2 Official PRINCE2 home since PeopleCert acquired AXELOS — certification paths, training, and method overview.
PeopleCert — PRINCE2 Agile https://www.peoplecert.org/prince2-agile Official PRINCE2 Agile guidance — combining PRINCE2 governance with Agile delivery (Scrum, Kanban, Lean Startup).
Wikipedia — PRINCE2 https://en.wikipedia.org/wiki/PRINCE2 Stable overview of PRINCE2 history, the 7-7-7 structure, adoption by country, and comparison with other methods.
ILX Group — PRINCE2 Methodology https://www.prince2.com/prince2-methodology Community resource with process diagrams, theme summaries, and study materials — good for quick visual reference.
UK Government — Project delivery https://www.gov.uk/government/collections/project-delivery Context on PRINCE2's government origins — UK public sector project delivery standards and frameworks.

Six Sigma / Lean Six Sigma

Resource URL Executive summary
ASQ — Six Sigma https://asq.org/quality-resources/six-sigma Practitioner-neutral overview from the American Society for Quality — DMAIC, tools, belt system, history, and relationship to Lean.
ASQ — Lean https://asq.org/quality-resources/lean ASQ overview of Lean principles and tools — the waste-elimination half of Lean Six Sigma.
ASQ — DMAIC Process https://asq.org/quality-resources/dmaic Detailed walkthrough of the DMAIC cycle: Define, Measure, Analyze, Improve, Control — with tool recommendations per phase.
Wikipedia — Six Sigma https://en.wikipedia.org/wiki/Six_Sigma Comprehensive overview including history (Motorola, GE), methodology, tools, criticism, and industry adoption patterns.
Wikipedia — Lean Six Sigma https://en.wikipedia.org/wiki/Lean_Six_Sigma Overview of the combined methodology — how Lean and Six Sigma complement each other.
iSixSigma https://www.isixsigma.com/ Community hub: articles, case studies, tools, calculators, and forums — practical Lean Six Sigma content for practitioners.
IASSC — Lean Six Sigma https://www.iassc.org/ Certification body: International Association for Six Sigma Certification — belt certification standards and body of knowledge.

Cross-cutting / comparative

Resource URL Executive summary
Wikipedia — Project management https://en.wikipedia.org/wiki/Project_management Broad context on PM as a discipline: history, methodologies, knowledge areas, and relationship to operations management.
Wikipedia — Comparison of PM approaches https://en.wikipedia.org/wiki/Comparison_of_project_management_methodologies Side-by-side comparison of PM methodologies including PMI, PRINCE2, Agile, and others — useful for quick orientation.
Axelos — Best management practice portfolio https://www.peoplecert.org/browse-certifications Portfolio of PeopleCert-managed frameworks (PRINCE2, ITIL, MSP, MoP) — context for how PRINCE2 sits within a broader governance ecosystem.
PMI — Pulse of the Profession https://www.pmi.org/learning/thought-leadership/pulse Annual research on PM practice maturity, project success rates, and emerging trends — data for calibrating PM investment.