I'm getting started in the AI space and working for free to get testimonials. Are nonprofits a good fit to work for free in exchange for a testimonial and case study, and will it increase the perceived likelihood of achievement for a real business owner? Are case studies necessary?
No, case studies are not necessary, but of course they help. In fact, any proof you can give a prospective client that you have done what you are asking to do for them before, or that you have achieved some sort of success more broadly, will improve your closing rate. It'll also improve your positive reply rate to cold outreach. It'll improve virtually every aspect of your interaction across the stack. So I won't say that you need it — it's definitely optional — but it is highly recommended. If there is any way you can draw out even an additional 1% of social proof, better to do it now than later.