Migration Timeline with Risk and Value Curves
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Specification
The full specification below is extracted from
Chapter 12: Digital Transformation And Advanced Topics.
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83 | Type: chart
Chart type: Combination chart (line chart + area chart + timeline)
Purpose: Show the four-phase migration journey with overlaid risk and value curves, demonstrating how risk decreases and value increases over time
X-axis: Time (months 0-24), divided into four phases
Phase boundaries marked with vertical dotted lines:
- Phase 1: Months 0-6 (Parallel Operation)
- Phase 2: Months 6-14 (Selective Process Migration)
- Phase 3: Months 14-20 (Critical Process Migration)
- Phase 4: Months 20-24 (Legacy Decommissioning)
Y-axis (left): Risk Level (0-100%, labeled as Low/Medium/High)
Y-axis (right): Business Value Realized (0-100%)
Data series:
1. Risk Level (red line with area fill, decreasing over time):
- Month 0: 75% (High - starting migration)
- Month 3: 80% (Highest - running two systems)
- Month 6: 65% (Decreasing - validation complete)
- Month 10: 50% (Medium - early wins)
- Month 14: 55% (Slight increase - critical migration begins)
- Month 17: 35% (Decreasing)
- Month 20: 20% (Low - stable operation)
- Month 24: 10% (Very low - legacy decommissioned)
2. Business Value (green line with area fill, increasing over time):
- Month 0: 5% (baseline legacy value)
- Month 6: 15% (learning phase)
- Month 10: 40% (early process wins)
- Month 14: 60% (significant adoption)
- Month 17: 75% (critical processes migrated)
- Month 20: 90% (full operational value)
- Month 24: 100% (maximum value realized)
3. System Usage indicators (stacked bar chart, background):
- Legacy CMDB usage (red bars, decreasing)
- Graph system usage (green bars, increasing)
- Shows the crossover point around month 12
Phase labels with icons:
- Phase 1: Parallel Operation icon (two parallel lines)
- Phase 2: Selective Migration icon (partial arrow)
- Phase 3: Critical Migration icon (lightning bolt)
- Phase 4: Decommission icon (power off symbol)
Key milestones (marked with circular markers on timeline):
- Month 3: "Data Validation Complete"
- Month 8: "First Critical Process Migrated"
- Month 14: "Legacy No Longer Primary System"
- Month 20: "Legacy Read-Only Mode"
- Month 24: "Legacy Decommissioned"
Annotations:
- Arrow pointing to month 14: "Crossover point - Graph becomes primary system"
- Shaded region months 10-16: "Highest activity period"
- Text box at month 12: "Risk stabilizes as confidence grows"
Title: "IT Management Graph Migration: Risk, Value, and Timeline"
Legend (top right):
- Red line: Project Risk Level
- Green line: Business Value Realized
- Red bars: Legacy CMDB Usage
- Green bars: Graph System Usage
- Dotted vertical lines: Phase boundaries
Visual styling:
- Semi-transparent area fills under risk and value curves
- Grid lines for easier reading
- Professional color palette (red for risk, green for value)
- Clean, modern chart design
Implementation: Chart.js with custom plugins for phase labels and annotations
Canvas size: 1000x600px
Educational notes:
- Notice how risk temporarily increases at phase boundaries (change is risky)
- Value follows an S-curve (slow start, rapid growth, plateau)
- The crossover point (month 14) is critical decision moment
- Risk never reaches zero—ongoing management always required
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