Summary
A lean, 20-person marketing agency needed to consistently deliver stronger ROI for a growing and increasingly diverse client roster - without increasing headcount or inflating costs. While respected for brand strategy and media planning expertise, the agency struggled to clearly prove which channels were driving results due to fragmented data and limited cross-channel visibility.
By adopting Arima's Marketing Mix Modeling (MMM) platform, the agency gained a scalable, repeatable framework for optimization - resulting in an 18% average improvement in client ROAS.
The Challenge
As client expectations increased, the agency faced several operational and measurement constraints:
- Fragmented performance data: Disjointed reporting across platforms made it difficult to understand true cross-channel impact.
- Growing pressure to prove ROI: Clients demanded clearer justification for media investments and reallocations.
- Limited scalability of traditional MMM: Per-seat and per-model pricing from legacy providers restricted how often models could be run across multiple clients.
- Lack of scenario flexibility: The team needed to test multiple "what-if" budget and channel scenarios to guide proactive planning - not just retrospective reporting.
The agency required a consistent, scalable MMM solution that could support every client engagement without introducing incremental costs.
Solution
The agency selected Arima's Marketing Mix Modeling platform to build a unified, client-ready optimization workflow.
Key capabilities included:
- Unlimited model runs, enabling MMM deployment across all clients without per-model or per-seat fees
- Channel and sub-channel ROAS insights to confidently justify budget shifts
- Scenario planning tools to pre-test allocation strategies and forecast outcomes
- Automated reporting, reducing manual effort while elevating the client experience
With Arima, the agency was able to deliver bespoke insights for each client while maintaining speed, flexibility, and cost efficiency.
Result
18% average improvement in client ROAS, with standout gains in:
- Paid Search: +36%
- Streaming Video: +31%
- 15% increase in client retention, driven by greater transparency and performance confidence
- 4% improvement in media efficiency through smarter budget allocation
- 30% reduction in planning and reporting time, freeing the team to focus on strategy
- Elevated agency positioning as a strategic partner and a critical part of client decision-making workflows
By replacing fragmented reporting with scalable MMM, the agency transformed ROI optimization into a repeatable advantage - strengthening client relationships while protecting margins.
