A case study needs a chain of evidence

"We helped a client grow revenue" leaves most of the important questions unanswered. What was happening beforehand? What changed? What did the adviser actually do? What else happened during the same period?

A useful case study establishes a baseline, describes the intervention and reports the outcome over a defined period. It also identifies the limits of attribution. A new sales process introduced alongside a product launch and a price change cannot reasonably claim all subsequent revenue growth.

Use the client's operating language. If the benefit was fewer handover errors, show how those errors were counted. If the benefit was released management time, distinguish an estimate from a measured reduction. Precision about the metric matters more than an impressive headline.

Include the conditions that made the work possible. An engaged sponsor, clean data or a narrow initial scope may explain why the approach worked. Omitting these conditions makes the story easier to market and less useful to a buyer deciding whether it applies.

Anonymity is sometimes necessary, but it weakens independent verification. Say what can be disclosed and avoid filling gaps with invented specificity. A candid account of limited evidence is more credible than a supposedly exact story nobody can substantiate.

A case study should help a reader judge transferability. The question is not simply whether the result was good. It is whether the reader's situation is similar enough for the experience to inform a decision.