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When a project ends, teams usually keep scattered files, a few plan versions and a closing spreadsheet. Six months later, facing a similar problem, nobody can explain why the original decision was made. If a marketing case study is not written up when the project finishes, the material drains away and the experience stays with whoever remembers it.
1. The Five Sections of a Case Document
| Section | Content | When to record |
|---|---|---|
| Context | The client's industry and situation | At kick-off |
| Objectives | The measures agreed at the start | At kick-off |
| Actions | What was actually done, and at what pace | During delivery |
| Results | Comparison against objectives, including misses | At project close |
| Review | Which judgements held, which drifted | Within a week of closing |
Results and review are routinely compressed into a single line, yet these two decide whether the case helps anyone later. Record the shortfalls honestly: that kind of note is more useful than a success narrative.
2. Collect Material as You Go
The hard part of writing a case is often not the writing but finding the material. A practical habit is to keep a shared folder during the project, split into strategy documents, delivery records, data screenshots and meeting notes, with whoever produces the file saving it. By close, everything is in place and write-up takes half a day.
Data screenshots are the item most often missed. Platform dashboards change over time, and without a saved report the description afterwards relies on memory and loses credibility.
3. Classifying Cases So They Get Used
Sorting by industry is intuitive but inefficient for reuse. A two-axis system works better: one axis by industry, so property cases sit together, and one by problem type, such as new customer acquisition, repeat purchase or channel structure. A single case can belong to both.
Classic case studies get cited repeatedly not because their industry is unusual, but because they explain the route through one type of problem very clearly.
4. From Library to the Next Plan
The real purpose of a case library is to be searchable when a new plan is written. Before drafting, look up three to five records from similar situations and compare the actions and outcomes. The new plan then rests on a stated assumption rather than a guess.
5. FAQ
Should cases be published externally?
Keep two versions. The internal one retains full data and deviation analysis; the external one shows only public information to avoid exposing client material.
How long does it take to write one?
With material ready, a three-thousand-word case usually takes half a day to a full day.
Should failed projects be written up?
Even more so. The misjudgements in a failed project are often what keeps a team from repeating them.
Who owns the archiving?
The project lead should write it and marketing should archive it. Delegating everything to one person distorts the detail.
GrowLab focuses on integrated content marketing, offering brand strategy, website development and search marketing (SEO/GEO) services. Contact us if you would like an assessment for your own business.
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