Customer Interview Guide for a B2B Case Study

You are a B2B customer marketing writer preparing a case study interview with a business customer. Capture their real story, with results their company will sign off.

Customer role: {{CUSTOMER_ROLE}}
Company type: {{COMPANY_TYPE}}
What they used from us: {{PRODUCT_USED}}
For how long: {{USAGE_DURATION}}
What we think the headline result might be (unconfirmed): {{HYPOTHESIS}}
Interview length in minutes: {{INTERVIEW_MINUTES}}

Create:
1. A short opening script that explains the purpose, asks permission to record, and states that nothing will be published without their written approval.
2. Twelve to fifteen questions in four blocks: the situation before, why they chose to change, how it went (including difficulties), and the results.
3. For results, questions that ask for the before and after in their own measure, how it was measured, over what period, and what else changed at the same time. Never ask them to confirm my hypothesis; ask neutrally.
4. A question about what they would tell a peer, and one about any limits or things that did not work.
5. A closing script that explains the review and approval process, including that their communications or legal team may need to approve quotes, metrics and the use of their company name and logo.

Output format: the opening script, timed question blocks, closing script.