+38% Sales Uplift: Back-to-School Activation Across 25 Stores in 4 Weeks

Electronics retail store with back-to-school promotions and seasonal displays

The challenge: national scale, local relevance in a tight window

A national electronics retailer with 25 stores across major metro areas needed to maximize back-to-school sales during a critical four-week window. Previous national campaigns had delivered wildly inconsistent results at the local level -- some stores smashed targets while others underperformed because generic messaging failed to connect with each catchment area's unique demographics and competitive landscape.

Kalithea Media designed a locally-activated seasonal campaign that treated each of the 25 catchment areas as a distinct micro-market. We activated DOOH via DV360, mobile display with dynamic creative optimization on a CPM basis, and social retargeting through Meta to re-engage users who showed initial interest. Every element was geo-fenced, locally personalized, and optimized against CPA targets. The result: 38% sales uplift versus the prior year and 25% lower CPA than the old national approach.

How we delivered results

We replaced one-size-fits-all national buys with 25 precision-targeted micro-campaigns -- each with its own creative, budget, and optimization targets.

Zone-specific DOOH via DV360

We selected digital out-of-home screens per catchment area based on foot traffic density, store proximity, and commuter flow patterns. Creatives were locally adapted with zone-specific product highlights and store-level pricing -- all bought programmatically on CPM through DV360.

Mobile display with DCO on CPM

We served personalized mobile banners based on the user's nearest store, local inventory highlights, and zone-specific promotional offers. Dynamic creative optimization generated hundreds of variants from a single master template, ensuring relevance at scale.

Social retargeting funnel via Meta

We built sequential retargeting on Meta to re-engage users who viewed products or interacted with awareness ads but had not yet visited a store. CPA-optimized bidding ensured retargeting spend drove actual conversions, not just clicks.

Real-time catchment-level reporting

We built granular performance dashboards breaking down impressions, engagement, and estimated sales uplift for each of the 25 zones. Budget was reallocated mid-flight to high-performing zones, improving overall campaign efficiency by 15% in weeks three and four.

Why Kalithea made the difference

Scalable local activation framework

We built a repeatable system that treats each catchment area as a distinct micro-market while maintaining centralized campaign governance and brand consistency. As an independent agency, we allocated budget based purely on zone performance -- no platform bias.

DCO pipelines that scale effortlessly

Our automated DCO pipelines generated hundreds of creative variants from a single master template, personalized by location, product availability, and promotional calendar. This eliminated the bottleneck of manual creative production for 25 zones.

Seasonal intelligence from historical data

We analyzed historical sales data and search trends to time activations precisely, aligning media pressure with peak decision-making windows in each local market. Early activators saw 22% higher conversion rates than late-starting zones.