Dual-Axis Timeline

1  Slide Type Name
Dual‑Axis Timeline

2  One‑Sentence Purpose Statement
Enables stakeholders to see “when things happen and how big they get” by combining a chronological milestone track with a quantitative trend on the same slide.

3  Visual Description (Designer Instructions)

• Set up a 16 × 9 slide with a shared horizontal time axis running across the middle.
• Lower Band – Milestone Track: place conventional milestone markers or phase bars along the axis; add short leader lines to compact labels above the line. Keep colours muted.
• Upper Band – Quantitative Trend: immediately above the milestone track, plot a line (or bars) against a secondary vertical axis at the right‑hand edge—e.g., cumulative revenue, monthly users, cost run‑rate. Use an accent colour and a 2 pt stroke; include faint gridlines for readability.
• Scale the secondary axis so its zero aligns with the timeline and its maximum sits near the top of the plot area. Label the axis clearly (“$ Millions”, “Active Users”, etc.) in 10 pt text.
• Align key inflection points on the trend line with milestones below by drawing subtle dotted vertical connectors; annotate the line with small call‑out bullets showing exact values at each milestone date.
• Add a vertical “Today” line crossing both bands so viewers can compare current progress on schedule and scale.
• Reserve the top 15 % for a concise headline and a legend explaining colour coding (trend vs milestones). Maintain generous margins so axis labels and milestone text never collide with the line chart.

4  Business Questions This Slide Answers

• How does the quantitative metric (revenue, adoption, burn) evolve relative to project milestones?
• Are we hitting the expected value targets by each key date?
• Where do major releases or investments inflect the growth curve?
• What upside remains between today and the ultimate target?
• Which upcoming milestones coincide with steep ramps or cost spikes?

5  When to Use (Typical Situations)

• Product roadmaps that tie launch dates to user‑growth targets.
• Transformation programs showing benefit realisation against project phases.
• CapEx projects linking spend profile to construction milestones.
• Marketing campaigns mapping spend or leads generated over time.
• Investor decks juxtaposing timeline of strategic moves with revenue trajectory.

6  Core Data Fields Required

• Time series dates (shared axis).
• Milestone titles and dates.
• Quantitative metric values aligned to the same dates.
• Current date marker (“Today”).
• Axis label for the quantitative metric.

7  Optional / Advanced Data Fields

• Planned vs. actual trend (dual lines).
• Confidence band or forecast cone on the trend.
• Milestone status icons (✓ complete, ⚠ at risk).
• Secondary metric displayed as a dotted line (e.g., cost vs revenue).
• Owner or team responsible for delivering each milestone or metric jump.