Lean Six Sigma has a reputation as something for large manufacturers, complete with belts and statistics. But the core ideas are simple, and they work just as well in an office, a service company or a small distributor.
Lean and Six Sigma in one sentence each
- Lean is about removing waste: steps, waiting, handoffs and rework that add no value for the customer.
- Six Sigma is about reducing variation and errors, so the process delivers the same good result every time.
Together, they give you a process that’s both faster and more reliable.
The DMAIC method
Lean Six Sigma improvements follow five steps, known as DMAIC:
- Define. Agree on the problem and what success looks like. For example: “Invoices go out late and customers pay slowly.”
- Measure. Find out how the process performs today. How long does it take? Where do errors happen?
- Analyze. Find the root cause, not just the symptoms. Is it missing information, too many approvals, or manual re-entry?
- Improve. Redesign the process to remove the cause. This is often where automation and custom software come in.
- Control. Lock in the gains with documentation, dashboards and alerts so the process doesn’t slide back.
A simple example
Take invoicing. Define: invoices are sent late. Measure: track how many days pass between job completion and invoice. Analyze: you discover the delay comes from waiting on job details from the field. Improve: job details are captured in an app when the work is done, and the invoice is generated automatically. Control: an aging dashboard shows anything overdue at a glance.
Why it matters for your business
Without a method, process changes are based on opinions and tend to fade. DMAIC keeps every change grounded in how your business really works, and makes sure improvements stick. It’s the discipline behind every business operating system we build.