Design for Six Sigma (DFSS) is a methodology for designing or fundamentally redesigning products, services, and processes so customer requirements and defect prevention are built in before launch. Applied well, Design for Six Sigma can supercharge your business by preventing costly design failures before they reach full operation.

DFSS is the umbrella approach. DMADV, Define, Measure, Analyze, Design, Verify, is one of its most common phase models. Use it when you are creating something new or overhauling a design. Use DMAIC when you need to improve an existing process with measurable performance data.

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Lean management, Six Sigma, and Lean Six Sigma all walk into a bar. Lean orders a Scotch. Six Sigma orders bourbon. Lean Six Sigma orders a hot toddy. The bartender says, “So that will be a whisky, a whiskey, and a bit of both.”

The joke works because the methods are related, but they are not identical. Lean removes waste, Six Sigma reduces defects and variation, and Lean Six Sigma combines both goals. This guide maps nine practical Six Sigma tools and techniques to the Define, Measure, Analyze, Improve, and Control stages of the DMAIC framework.

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Business risk is any event, condition, or decision that can stop a company from meeting its objectives. The risk may start inside the business, with people, systems, customers, competitors, or controls, or outside it, with disrupted supply chains, extreme weather, climate transition, and ecosystem loss.

Managing business risk means identifying exposure early, assessing likelihood and impact, assigning an owner, choosing a response, and collecting evidence that the control worked. This guide covers six direct business risks and the 3 main threats that can cascade through climate and nature. It also explains how you can manage each risk through controlled execution.

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AS9100 is the internationally recognized quality management system standard for aviation, space, and defense organizations. The current published edition is AS9100 Rev D, aligned with IAQG 9100:2016 and built on ISO 9001:2015. It keeps ISO 9001’s quality management foundation and adds aerospace controls for product safety, operational risk, configuration management, supplier oversight, counterfeit-part prevention, and traceability.

Those controls are one part of a much larger safety system that also includes engineering, regulation, maintenance, training, and accident investigation. The results are striking: IATA recorded 51 accidents across 38.7 million flights in 2025, while an MIT analysis estimated one fatality per 13.7 million passenger boardings from 2018 through 2022. AS9100 matters because it makes disciplined quality work repeatable across a complex global supply chain.

Business process optimization is the disciplined practice of measuring how work moves today, finding the constraint that matters most, testing a better method, and controlling the result so the improvement lasts.

This guide shows you how to diagnose a process, work through a real optimization example, apply a DMAIC-based method, and use free templates. It also explains how Process Street connects controlled documentation, repeatable workflows, approvals, evidence, and built-in AI in one Compliance Operations Platform.

$22 trillion was the cost of the 2008 financial crisis to the U.S. economy. Roughly 200,000 small businesses vanished into the recession, taking around 3 million jobs with them. The Financial Crisis Inquiry Commission later concluded that much of that devastation traced back to audit process failures.

Follow a sound audit process and you catch problems early. Skip it and the fallout scales from a single business right up to the national economy. This guide breaks down what an audit process is, why it matters, the five steps professional auditors follow, and how to run the whole thing inside Process Street.

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What is better than fixing something when it breaks? Stopping it from breaking in the first place. Are you poka-yoke woke? Stop mistakes with this error prevention method by adding a simple safeguard to a process so a mistake becomes impossible, obvious, or unable to move forward. A poka-yoke woke stop is a deliberate point where the process catches the error.

Born from the Toyota Production System, poka yoke turns quality from a final inspection into part of the work itself. The approach applies far beyond manufacturing. Any team can use mistake-proofing to design safer workflows, catch omissions, and prevent defects before they reach a customer.

During a routine cryogenic proof test on February 28, 2020, SpaceX’s Starship SN1 prototype suffered a catastrophic failure. Elon Musk attributed the failure to bad welding near the puck designed to bear the engine thrust load. Starship SN3 later collapsed during pressure testing because of test-configuration mistakes.

Controlled testing is designed to expose weaknesses before an operational system depends on them. The lesson is not that failure is acceptable, but that disciplined processes must turn test evidence and nonconformities into corrective action. That is the role of AS9100D: an aerospace quality management system standard for controlling work, managing risk, learning from problems, and improving performance. This guide explains the standard, its relationship to ISO 9001, and six free templates that can support implementation and internal audits.

ISO compliance used to mean thick binders and a slow, painful process for changing how any task was done. The 2015 revision of ISO 9001 quietly changed that. It gave organizations far more freedom over how much they document and how they store it, which opens the door to software, rapid iteration, and work instructions built from the bottom up rather than dictated from the top down.

Agile ISO is our name for how you combine compliance with the rapid process improvement of a startup. It keeps the rigor and auditability that ISO 9001 demands while letting you build, run, and improve processes at speed. This guide explains what ISO is, what ISO 9000 and ISO 9001 actually ask for, why the current standard is agile friendly, and how to put Agile ISO into practice.

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What are audit procedures, and how do you actually run them without missing a step? It is a question most teams fumble, even though audits are exactly where a missed step turns into a finding.

This guide breaks audit procedures down from the ground up: what they are, how the audit process works, the main types of internal audit, and how to run each one as an automated, auditable workflow. You also get 19 free Process Street templates you can copy and start using today.

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