When you're trying to hook those all-important B2B clients, you need proof that your solution works. Testimonials and references from previous clients are some of the best ways to prove your case. You can also strengthen your pitch with a B2B case study. These case studies offer real-world examples of how your solution works with measurable results. Well-written, persuasive case studies can push a person from the decision-making stage to the purchasing stage. This B2B copywriting guide covers case study design including tips that will show you how to write a B2B case study that converts.