Case Studies: How Successful Advertising Agencies Win Clients
Updated October 2023.
Is your ad agency struggling to get leads? Advertising case studies are an excellent way to demonstrate your best work to prospective clients to generate more consultation requests.
Case studies not only demonstrate your expertise as an agency, but also provide potential clients with helpful details about what they can expect from working with your company.
In this article, I will explore what an
2) Halo Waypoint’s Gears of War Gaming Case Study
Microsoft Game Studios hired Amp Agency to develop and execute a digital marketing strategy for the launch of Halo 5: Guardians.
Amp Agency had a goal to prevent gaming enthusiasts from defecting to other competitors and engage them in playing Halo and Gears of War longer. Here are the strategies that Amp Agency used in the case study:
- Dedicated Website: Amp created a new website specifically for Halo 5: Guardians, which was a hub for all of the game’s marketing materials. The website featured trailers, screenshots, other promotional content and links to pre-order the game.
- Social Media Campaigns: Amp Agency next ran several campaigns to build excitement around the game’s release. These campaigns included Twitter sweepstakes, where fans could win prizes by tweeting about the game; and a Facebook poll, where fans could vote on their favorite Halo character.
- Influencer Marketing: Amp partnered with popular YouTubers and Twitch streamers to promote Halo 5: Guardians to their audiences. The influencers created gameplay videos and other content showcasing the game’s features and encouraged their followers to pre-order it.
The game sold over five million copies in its first three months, generating over $400 million in revenue. The social media campaigns created by Amp Agency were particularly successful, with the Twitter sweepstakes generating over 100,000 entries and the Facebook poll receiving over one million votes.
Key takeaways:
- The customer story insights featured the main product in the background to help readers understand the client’s product in great detail.

- The case study included stunning images, screenshots and graphics throughout the content for easier understanding of how the campaign was implemented.

3) Single Grain’s Twenty20 Case Study
Twenty20 disrupted the crowded stock visual media space with a major twist on a tried-and-true mode. They hired Single Grain to focus on the pillars that truly differentiate them from their competitors. Single Grain designed a powerful marketing process, including a robust content marketing strategy.
With the help of Single Grain, Twenty20 received more traffic volume with the same consistency in revenue per session. They also witnessed an exponential growth in free trial volume with a significant reduction in their advertising cost.
Key takeaways:
- They added a video in the case study featuring Micah Cohen of Twenty20, who shared his opinions on the great work done by the Single Grain’s team.

- They also shared numbers and stats that emphasized the importance of the digital marketing service that Single Grain offered.

- The case study also featured a prominent CTA button for increasing the conversion rates.
4) Infidigit’s Myntra SEO Case Study
The Infidigit SEO case study for the Indian e-commerce store Myntra is another great example of an SEO campaign case study. By conducting comprehensive SEO audits and implementing SEO strategies at scale, Infidigit helped Myntra achieve a 187% increase in organic revenue and a 150% increase in organic visits.
Key takeaways:
- The case study website features a hero image with a smiling face, which is known to increase conversion rates.

- They effectively added internal links to other case studies from the right sidebar to lower the bounce rate of the page and to drive people to more pages on the site for maximum conversions.

- They added exact screenshots of the target keyword and the SERPs, which displayed the keyword ranking at the top of the organic search.

- They used bright orange-red as the CTA button color in a bid to attract more clicks.

5) Inflow’s Facebook Advertising Paid Ads Case Study
B2C brand Seltzer Goods approached Inflow to market their service. Inflow used Facebook as an advertising investment channel to promote their service. With intelligent ad targeting, the brand was able to acquire a 9.68x return on ad spend and a 785% increase in monthly revenue. Moreover, they achieved a $4.87 cost per customer acquisition, which was exceptional.
Key takeaways:
- They published the case study as a blog post, which helped to attract social shares.

- The post is comprehensive and explains the entire strategy and technology that they used to attract potential prospects and scale the brand’s growth. They leveraged data at every point to make it easier for the readers to understand how their campaign worked.
- They added actual ad creative screenshots to tell readers exactly how they used the branding and logo to engage the customers.

Dive Deeper: We Refreshed 15 Posts on 3 SaaS Blogs – And Increased Organic Traffic on All
Conclusion
To produce a successful creative agency case study, it’s important to focus on the key elements that will make it engaging and informative. This includes providing a clear overview of the client and the challenges they faced, outlining your thought-process tactics and presenting your results in a compelling way. Most importantly, don’t just present dry facts and numbers; tell the client’s story.
If you’re ready to level up your business with ads that convert with the best ROAS, Single Grain’s advertising experts can help.👇
Advertising Agency Case Study FAQs
How do you write a case study for an advertising agency?
Here are the steps involved in writing a case study for a marketing agency:
- Choose a client and a project.
- Collect information about the project.
- Create a structure for the case study.
- Write the case study, emphasizing your company’s strengths and expertise.
- Include quotes from the client to highlight their satisfaction.
- Edit and proofread the case study thoroughly.
- Publish and promote the case study to illustrate the company’s expertise.
- Tailor the case study to your target audience, using visuals and language that resonate with them.
What is a good example of a case study?
An exceptional case study that refers customers and generates more leads includes:
- A brief introduction
- The goals
- Strategies used in the case study
- The result
How can I choose the right advertising agency for my business?
To choose the right advertising agency for your business, consider the agency’s experience, expertise, track record and client portfolio. Look for an advertising company with experience in your field that can demonstrate its ability to deliver results.
What are the benefits of working with an advertising agency?
Working with an advertising agency can offer several benefits, including access to expertise and resources that may need to be available in house, the ability to develop and execute effective marketing campaigns, and the potential to save time and money by outsourcing marketing functions.
What is an agency case study?
An agency case study is a comprehensive presentation in which an advertising agency showcases their success stories in an attempt to win over potential clients. It generally includes details about the goals of past clients, the approach an agency took to achieve those goals and the results produced.
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