Richard Ewing Frameworks

2 min read

What is Evergreen Ratio?

TL;DR

The Evergreen Ratio is a framework coined by Richard Ewing that measures the balance between fixed-cost software (traditional code with near-zero marginal cost) and variable-cost AI features (code with per-interaction costs) in a product.

⚡ Evergreen Ratio at a Glance

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Category: Richard Ewing Frameworks

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Read Time: 2 min

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Related Terms: 4

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FAQs Answered: 1

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Checklist Items: 5

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Quiz Questions: 6

📊 Key Metrics & Benchmarks

2-6 weeks

Implementation Time

Typical time to implement Evergreen Ratio practices

2-5x

Expected ROI

Return from properly implementing Evergreen Ratio

35-60%

Adoption Rate

Organizations actively using Evergreen Ratio frameworks

2-3 levels

Maturity Gap

Average gap between current and target state

30 days

Quick Win Window

Time to see first measurable improvements

6-12 months

Full Impact

Time for comprehensive Evergreen Ratio transformation

Formula: Evergreen Ratio = Fixed-Cost Code Revenue ÷ Variable-Cost AI Revenue

A high Evergreen Ratio (>3:1) means most of your revenue comes from traditional software with high margins. A low ratio (<1:1) means AI features dominate, compressing margins.

The Evergreen Ratio helps teams decide when to replace AI features with deterministic code — if an AI feature's behavior becomes predictable enough, converting it to rules-based logic eliminates the variable cost entirely.

🌍 Where Is It Used?

Evergreen Ratio is implemented across modern technology organizations navigating complex digital transformation.

It is particularly relevant to teams scaling beyond their initial product-market fit, where operational maturity, predictability, and economic efficiency are required by leadership and investors.

👤 Who Uses It?

**Technology Executives (CTO/CIO)** leverage Evergreen Ratio to align their technical strategy with overriding business constraints and board expectations.

**Staff Engineers & Architects** rely on this framework to implement scalable, predictable patterns throughout their domains.

💡 Why It Matters

SaaS companies are valued on gross margins. AI features that compress margins reduce enterprise value. The Evergreen Ratio helps teams protect margin by identifying which AI features should be converted to deterministic code.

📏 How to Measure

Categorize all revenue-generating features as fixed-cost or variable-cost. Calculate the ratio. Track over time — a declining ratio means margin erosion.

🛠️ How to Apply Evergreen Ratio

Step 1: Assess — Evaluate your organization's current relationship with Evergreen Ratio. Where is it strong? Where are the gaps?

Step 2: Define Goals — Set specific, measurable targets for Evergreen Ratio improvement aligned with business outcomes.

Step 3: Build Plan — Create a phased implementation plan with clear milestones and ownership.

Step 4: Execute — Implement changes incrementally. Start with high-impact, low-risk improvements.

Step 5: Iterate — Measure results, learn from outcomes, and continuously refine your approach to Evergreen Ratio.

✅ Evergreen Ratio Checklist

Assess your organization's current Evergreen Ratio maturityIdentify quick wins for Evergreen Ratio improvementCreate a 90-day Evergreen Ratio action planAssign ownership for Evergreen Ratio initiativesMeasure and report progress quarterly

📈 Evergreen Ratio Maturity Model

Where does your organization stand? Use this model to assess your current level and identify the next milestone.

Initial

14%

No formal Evergreen Ratio processes. Ad-hoc and inconsistent across the organization.

Developing

29%

Basic Evergreen Ratio practices adopted by some teams. Documentation exists but is incomplete.

Defined

43%

Evergreen Ratio processes standardized. Training available. Metrics established but not yet optimized.

Managed

57%

Evergreen Ratio measured with KPIs. Continuous improvement active. Cross-team consistency achieved.

Optimized

71%

Evergreen Ratio is a strategic advantage. Automated where possible. Data-driven decision making.

Leading

86%

Organization sets industry standards for Evergreen Ratio. Published thought leadership and benchmarks.

Transformative

100%

Evergreen Ratio drives business model innovation. Competitive moat. External recognition and awards.

⚔️ Comparisons

Evergreen Ratio vs.	Evergreen Ratio Advantage	Other Approach
Ad-Hoc Approach	Evergreen Ratio provides structure, repeatability, and measurement	Ad-hoc requires zero upfront investment
Industry Alternatives	Evergreen Ratio is tailored to your specific organizational context	Alternatives may have larger community support
Doing Nothing	Evergreen Ratio creates measurable, compounding improvement	Status quo requires zero effort or change management
Consultant-Led Only	Evergreen Ratio builds internal capability that scales	Consultants bring external perspective and benchmarks
Tool-Only Solution	Evergreen Ratio combines process, culture, and measurement	Tools provide immediate automation without culture change
One-Time Project	Evergreen Ratio as ongoing practice delivers compounding returns	One-time projects have clear scope and end date

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How It Works

Visual Framework Diagram

┌──────────────────────────────────────────────────────────┐ │ Evergreen Ratio Framework │ ├──────────────────────────────────────────────────────────┤ │ │ │ ┌──────────┐ ┌──────────┐ ┌──────────────┐ │ │ │ Assess │───▶│ Plan │───▶│ Execute │ │ │ │ (Where?) │ │ (What?) │ │ (How?) │ │ │ └──────────┘ └──────────┘ └──────┬───────┘ │ │ │ │ │ ┌──────▼───────┐ │ │ ◀──── Iterate ◀────────────│ Measure │ │ │ │ (Results?) │ │ │ └──────────────┘ │ │ │ │ 📊 Define success metrics upfront │ │ 💰 Quantify impact in financial terms │ │ 📈 Report progress to stakeholders quarterly │ │ 🎯 Continuous improvement cycle │ └──────────────────────────────────────────────────────────┘

🚫 Common Mistakes to Avoid

Implementing Evergreen Ratio without executive sponsorship

⚠️ Consequence: Initiatives stall when competing with feature work for resources.

✅ Fix: Secure VP+ sponsor who can protect budget and prioritize the initiative.

Treating Evergreen Ratio as a one-time project instead of ongoing practice

⚠️ Consequence: Initial improvements erode within 2-3 quarters without sustained effort.

✅ Fix: Embed into regular rituals: quarterly reviews, team OKRs, and reporting cadence.

Not measuring Evergreen Ratio baseline before starting

⚠️ Consequence: Cannot demonstrate improvement. ROI narrative impossible to build.

✅ Fix: Spend the first 2 weeks establishing baseline measurements before any changes.

Copying another company's Evergreen Ratio approach without adaptation

⚠️ Consequence: Context mismatch leads to poor results and wasted effort.

✅ Fix: Use frameworks as starting points. Adapt to your team size, stage, and culture.

🏆 Best Practices

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Start with a 90-day pilot of Evergreen Ratio in one team before rolling out

Impact: Validates approach, builds evidence, and creates internal champions.

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Measure and report Evergreen Ratio impact in financial terms to leadership

Impact: Ensures continued investment and executive support for the initiative.

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Create a Evergreen Ratio playbook documenting processes, tools, and decision frameworks

Impact: Enables consistency across teams and reduces onboarding time for new team members.

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Schedule quarterly Evergreen Ratio reviews with cross-functional stakeholders

Impact: Maintains momentum, surfaces issues early, and keeps the initiative visible.

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Invest in training and certification for Evergreen Ratio across the organization

Impact: Builds internal capability and reduces dependency on external consultants.

📊 Industry Benchmarks

How does your organization compare? Use these benchmarks to identify where you stand and where to invest.

Industry	Metric	Low	Median	Elite
Technology	Evergreen Ratio Adoption	Ad-hoc	Standardized	Optimized
Financial Services	Evergreen Ratio Maturity	Level 1-2	Level 3	Level 4-5
Healthcare	Evergreen Ratio Compliance	Reactive	Proactive	Predictive
E-Commerce	Evergreen Ratio ROI	<1x	2-3x	>5x

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Explore the Evergreen Ratio Ecosystem

Pillar & Spoke Navigation Matrix

⚖️ Flagship Advisory

PDI Diagnostic

Product Debt Index

Quantify the hidden economic liability of Evergreen Ratio across your architecture using the world's leading valuation impact framework.

Deploy Tool

$10k Value

❓ Frequently Asked Questions

What is a good Evergreen Ratio?

Above 3:1 is healthy (most revenue from fixed-cost code). Below 1:1 is dangerous — AI costs are dominating margins. Between 1:1 and 3:1 requires active margin management.

🧠 Test Your Knowledge: Evergreen Ratio

Question 1 of 6

What is the first step in implementing Evergreen Ratio?

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Need Expert Help?

Richard Ewing is a Product Economist and AI Capital Auditor. He helps companies translate technical complexity into financial clarity.

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