6 August 2024

Case Study Testimonial: Social Proof for the Win

Updated August 2024: In SaaS case studies, as in most content, no one wants to hear you ramble on about how great you are. Prospects are, however, very interested in what your customer thinks about you. This is why a case study testimonial is excellent social proof.

In fact, 88% of marketing teams see a 10+% lift to conversion rates when you include a testimonial in a campaign, and almost half of marketing teams see a 25+% lift.

In this post, we’re going to cover what makes a great case study testimonial, and walk you through examples from Splunk and Gong. This post is part of a series on how to write a case study for B2B SaaS.

Want to do a video testimonial? See 5 video testimonial software options.

Case study testimonial is the cherry on your sundae

It’s the attention-grabber. It’s the pièce de résistance.

A case study testimonial is the customer telling the world that they enjoyed working with you, the results they experienced were impactful, and that they recommend your products or services to others.

But not just any quote pulled from an interview is going to work well as a testimonial in your case study. The quotes you choose to highlight as case study testimonials should be specific and resonate. “It’s great and I’m happy!” convinces no one.

Case study testimonial comes to life with details

Splunk hits the nail on the head with this testimonial in its Tesco case study:

A case study testimonial example from Splunk.
Source: Splunk

Chirag’s quote is descriptive and explains how Splunk is central to Tesco’s operational success.

Choose a quote with big impact as a callout for your case study testimonial. Separate it from the text, increase the font and catch the reader’s eye with colour and other design elements.

Include a headshot

Take a moment to compare Splunk’s testimonial from above to Gong’s testimonial below. Which one has more impact for you?

If you’re like me, you’ll probably agree that Gong’s testimonial with the headshot is more powerful.

When you include a professional, yet candid headshot, it increases the visibility, relatability and trustworthiness of the testimonial.

A case study testimonial example from Gong.
Source: Gong

Great quotes from real customers can also be used elsewhere on your website, in social media and in other marketing and sales material.

Authenticity is important

It’s not just professional headshots that help with credibility. The words need to be genuine as well. Take a look at these 2 case study testimonial examples:

A case study testimonial example from Your Income Advisor
Source: Your Income Advisor

Too over the top, too perfect—with big numbers, no believable detail and photos that don’t inspire anything except an eye roll.

It’s all too easy to write a fake testimonial, and there are too many of them out there. Take the time to make yours credible. Your next customers will notice.

How to select a case study testimonial

Case studies with testimonials are much more vibrant than those that don’t include the customer’s voice.

When incorporating quotes into your case study, it’s less about how to write a testimonial, and more more about how to select a great quote and edit it so it’s strong, concise and powerful.

Your main pull quote should speak to the overall impact your solution has had on your customer’s success. And for your Challenge, Solution and Results sections, select quotes that directly address those areas in the story.

Get a hand with your case studies

At Uplift Content, we work with high-growth SaaS companies to share their untold success stories and showcase how their products enable their customers to solve tough problems. Check out our case study writing services.


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Klimt & Design

Klimt & Design is a digital design agency that specializes in brand and product design for venture-backed startups and venture capital funds. Learn more about Klimt & Design on LinkedIn

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