An Operating System for Modern Change Management
The Lean Change OS
Frameworks tell you what to do. The Change OS helps you figure out what to do — by combining 136 Elements of Change across 4 dimensions to match your actual context. Not someone else's best practice.
Change Management Has a Framework Problem
Most approaches to change hand you a linear process and tell you to follow the steps. But change isn't linear. Your people aren't predictable. And the thing that worked at your last company probably won't work at this one.
The Lean Change OS doesn't give you a plan. It gives you 136 elements — concepts, tools, stances, and big ideas — that you combine based on what you're actually facing. Think of it like chemistry: you pick the elements, you create the compound. Different context, different compound.
“Our Microsoft US Area Transformation Office is working together as a team strengthen our change agility muscle by adding Lean Change Management to our collective business transformation toolkit. Thank you Jason Little for guiding us on this journey to learn about using experimentation, iteration, and co-creation as we lead change!”
The Content
What's Inside the Lean Change OS?
Shift from push-based change management to pull-based
Lean Change OS vs Prosci ADKAR vs ACMP's Standard
How is Lean Change different from traditional change management?
Lean Change is based the core premise that you cannot predict the future. The faster you iterate through the Lean Change Cycle, the faster you learn. The faster you learn, the more likely your change will be successful.
Every change strategy has 7 elements. Here's how we see them differently.
Most approaches to change agree on what needs to happen. The difference is how. Here's a side-by-side look across three approaches.
| Strategy Element | Prosci | ACMP | Lean Change OS |
|---|---|---|---|
| 1Clear Vision | Created by the change team and sponsors, communicated through the hierarchy using the PCT Model. | Defined through "The Standard" — a structured process with documented deliverables. | Co-created with the people affected by the change. The Change Canvas captures the conversation, not just the artefact. |
| 2Impact Assessment | Stakeholder analysis to identify where resistance might appear and who needs managing. | Formal impact and readiness assessments aligned to the ACMP Standard. | Ripples help explore who and what is affected. Insights Gathering validates assumptions iteratively — not as a one-time document. |
| 3Comms Plan | Broadcast-style: tell people what's changing and why. Sponsor messaging cascades down. | Structured communication plans aligned to stakeholder analysis. | Shift from broadcasting to dialogue. Lean Coffee replaces newsletters. Open Spaces generate conversation. Visualizing the change IS communication. |
| 4Training & Development | Plan training up front. Classroom-based programs delivered by the change team. | Competency-based development aligned to CMBoK* learning outcomes. | Co-created based on need. Movers become the trainers and coaches. Shadow coaching, pairing, and just-in-time learning over scheduled classrooms. |
| 5Resistance Management | Resistance must be identified and overcome. ADKAR diagnoses where individuals are "stuck." | Not directly prescribed — left to the methodology the practitioner chooses. | Resistance doesn't exist — we only see the response people have to change. We get curious, not furious. Dialogue sessions replace mitigation plans. |
| 6Implementation Plan | Phases and activities planned in advance across the 3-Phase Process (Prepare, Manage, Reinforce). | Detailed planning expected per "The Standard" with formal deliverables at each stage. | The plan sucks, but continuous planning is awesome. Good enough for now, adjusted based on new information. Big/Next/Now gives a just-in-time model. |
| 7Progress Indicators | ROI defined up front as part of the business case. Success measured against predefined objectives. | Measurement criteria defined in planning phase, evaluated post-implementation. | It's impossible to know everything up front. Fuzzy diagnostics early on, measurements evolve over time. Diagnostics act as early warning signs, not report cards. |
Competitor information based on publicly available data as of 2026. We respect what these organizations have contributed to the field — we just think change deserves a more modern approach.