Caseking Partners with Sellforte to Drive Smarter Marketing Investments Through MMM & Incrementality

2 min read
May 22, 2026

Berlin, Germany – May 2026: Caseking, one of Europe’s leading gaming ecommerce retailers, is partnering with Sellforte to gain a clearer understanding of how marketing drives growth.

As the business expands across brands, markets, and product categories, the need for better decision-making becomes increasingly important, not just tracking where budgets are spent, but understanding which investments are truly driving incremental results.

Caseking x Sellforte

Smarter marketing investment decisions with Sellforte

For a retailer like Caseking, marketing performance is influenced by a complex mix of brands, channels, campaigns, and market dynamics. Traditional reporting often struggles to capture the full picture, especially in a fast-moving ecommerce environment.

The challenge is not just measuring performance, but understanding which marketing activities are actually impacting commercial outcomes and where future investment should go.

With Sellforte, Caseking is building a more complete and causal view of marketing effectiveness. By bringing together media, sales, and business data into one measurement framework, the team can move beyond assumptions and better understand the true incremental impact of its marketing investments.

On selecting Sellorte, Caseking's Head of Marketing, Izabella Olszewska, says, “For a business operating across multiple brands, markets, and channels, clarity is everything. We want to understand what is truly incremental so we can make better decisions, faster, and keep improving how marketing contributes to growth. That's why we've selected Sellorte as our marketing measurement partner when it comes to MMM, incrementality testing, and smarter marketing investments.”

Turning measurement into action

With Sellforte, Caseking will be able to:

  • Understand incrementality across brands, markets, and campaigns, enabling decisions based on real business impact rather than surface-level attribution
  • Improve market-level budget allocation across regions and business units
  • Gain deeper customer and product-group insights to identify where growth is being created and where spend is less effective
  • Better understand how channels work together instead of evaluating platforms in isolation
  • Build a continuous optimization process where measurement becomes part of everyday decision-making, not just periodic reporting

From reporting to continuous optimization

This partnership marks a shift from static reporting toward a more adaptive approach to commercial decision-making. Instead of relying on occasional performance snapshots, Caseking is building a continuous view of marketing effectiveness, one that evolves alongside budgets, channels, and new growth opportunities.

Chris Kervinen, Head of Ecommerce Sales at Sellforte, adds, “Caseking is exactly the kind of business where better measurement creates immediate strategic value. Our role is to help the team understand causal impact with confidence and turn that understanding into smarter, more actionable decisions over time.”

 

About Caseking

Caseking is a Berlin-based ecommerce retailer and distributor specializing in gaming PCs, computer hardware, peripherals, and enthusiast technology. Serving a broad European customer base, the company is known for its extensive product range, strong category expertise, and deep connection to gaming and PC-building communities.

About Sellforte

Sellforte is an AI-powered marketing optimization platform built for retail, ecommerce, and DTC brands. Powered by Sellforte AI, the platform combines proven Marketing Mix Modeling with forward-looking intelligence to forecast, recommend, and optimize media budget decisions with confidence and precision.