Lineage

Lineage shows how baseline state evolved through promotions and snapshot restores.

Use it to answer: what became baseline, from where, and with what measurable delta?

Where to view lineage

Baseline lineage page: /live/lineage

The page supports timeline and table views and links to related scenarios/snapshots.

What each lineage entry shows

type (Scenario Promotion or Snapshot Restore)
from state
to state
applied timestamp
actor who performed action
summary deltas (headcount, FTE, cost, velocity)

This gives a compact historical chain of baseline transitions.

Why lineage is different from activity log

Activity log: event-level detail of individual modeling changes
Lineage: baseline transition milestones and outcomes

Use both together:

lineage for high-level transition history
activity for exact change-level forensics

Typical decision workflow

Compare candidate scenarios via deltas.
Promote chosen scenario.
Confirm promotion appears in lineage.
Reference lineage in release/change notes.

If needed later, restore a previous snapshot and observe that restore as a new lineage entry.

Best practices

keep scenario names explicit and time-scoped
avoid overlapping promotions without review checkpoints
treat lineage as authoritative record in stakeholder retrospectives