# Technical Handoff Brief

## Customer / business behavior
What should the user, customer or operating team experience?

## Current evidence
What is happening now? Include reproducible behavior, logs, counts or test evidence.

## System boundary
Where does ownership or data move from one system/team to another?

## Data contract
- Source:
- Identifier:
- Event / attribute / file shape:
- Timing / freshness:
- Required fields:

## Constraints
Latency, scale, consent, environment access, dependencies and known limitations.

## Acceptance criteria
1.
2.
3.

## Negative cases
What must not happen? Include opt-out, duplicate, stale-data and failure scenarios.

## Ownership
- Implementation:
- Decision:
- QA / UAT:
- Escalation:

## Open decisions
What is still genuinely unresolved?