Case studies from what customers said

Case studies are usually written by marketing, from notes, about a customer who is not in the room. They come out accurate and lifeless, full of sentences no customer ever said, and the customer approves them because arguing is more work than agreeing.

A recorded call is better raw material than any interview you could arrange, because the customer was talking about their problem rather than performing a testimonial.

Get permission first, properly

Before anything else. Ask whether you may quote them, name them, and use the call. Get it in writing.

This is not a formality. A case study built from a call the customer did not know would be used that way is a relationship you have spent for a page of marketing.

Build it from what they said

Using this call transcript, draft a case study.

Structure it as: what their situation was before, what specifically was
hard about it, what changed, and what is different now.

Use their words wherever possible. Quote them directly for anything about
the problem, because that is the part a reader recognises themselves in.

Do not use a number they did not say. Do not describe a benefit they did
not describe. If the strongest thing they said is mild, keep it mild.

Mark anything I would need to confirm with them as [CHECK].

"If the strongest thing they said is mild, keep it mild" is the discipline that makes case studies believable. The temptation is to upgrade "it's been helpful" into "transformative", and readers have been trained by a decade of marketing to discount exactly that word. A mild, specific, obviously real quote outperforms an enthusiastic vague one.

Send it to them as a draft, not an approval

Ask them to correct it rather than to approve it. The difference in framing produces genuinely different responses: approval invites a yes, correction invites the detail that makes the study good.

The [CHECK] markers give them somewhere obvious to start.

Keep the boring specifics

The instinct in editing is to remove the operational detail — the tool they were using before, the exact thing that took four hours. That detail is what makes another reader recognise their own situation.

Generic case studies fail because they could be about anyone.

What good looks like

A case study a customer would send to a peer, with quotes they actually said, and specifics that make a stranger think "that is us".

The measure is whether your sales team uses it. An unused case study is usually one that is true and unrecognisable.