Write a Marketing Campaign Retrospective

Write a marketing campaign retrospective:

Campaign name: [NAME]
Channel mix: [CHANNELS]
Dates: [START TO END]
Goal and KPI targets: [GOALS]
Results: [METRICS ACHIEVED]
Budget: [SPEND]
Creative / offers used: [SUMMARY]
What surprised the team: [NOTES]

Requirements:
1. Separate outcomes from activity and vanity metrics.
2. Explain what worked, what failed, and why (with hypotheses).
3. Extract 3 reusable playbook lessons.
4. Propose next-test ideas with owners.
5. Keep the write-up under 700 words.

Deliverables:
1. A campaign retrospective memo.
2. A results table: KPI, target, actual, delta.
3. A next-tests backlog (5 items).