Online digital fair system

Project type:	Campaign-driven digital marketplace system
Client:	Olx Group (Romania, Portugal, Bulgaria, Poland)
Industry:	Online classifieds & advertising
Role:	System architecture, data pipeline engineering, campaign logic & WordPress integration
Link:	https://promotii.olx.ro
Project lead:	Liviu Jurubita, Founder & Lead Developer, Webstone Studio
Services:	Business-Driven Web Architecture, Integrations & Automation, Long-Term Technical Partnership, Web Product Engineering

Context

OLX required a flexible system that would allow their Sales & Advertising teams to launch large-scale “Digital Fairs” across multiple markets: Romania, Portugal, Poland, and Bulgaria.
These fairs were not simple landing pages.

They needed to behave like temporary, high-volume marketplaces:

• Category-specific
• Filter-driven
• Sponsor-integrated
• Time-limited
• Easily replicable across countries

How can we launch multiple simultaneous digital fairs, powered by structured data?

Challenge

• Campaigns needed to handle thousands of listings.
• Each fair had a strict lifecycle (before launch, live event, post-event messaging).
• Sales teams required operational autonomy.
• Listings had to support structured categories and dynamic filtering.
• Sponsor visibility and featured placements needed flexible control.
• The system had to be replicable across markets.

The solution needed to be:
Scalable. Controlled. Autonomous. Reusable. Market-ready.

Strategy

Instead of building static microsites, we designed a campaign-based digital fair engine.

The system allows OLX to:

• Launch multiple fairs simultaneously
• Activate or deactivate campaigns based on predefined timelines
• Dynamically structure listings into categories
• Enable advanced filtering per campaign
• Configure sponsor exposure and featured listings
• Replicate campaign structures across countries

Each digital fair behaves as a temporary vertical marketplace,  structured for performance, and retired without affecting core systems.

The architecture prioritizes control and repeatability.

User Experience Principles

• Marketplace-native browsing experience
• Clear category segmentation
• Structured filtering across verticals
• Sponsor visibility integrated naturally
• Clean campaign state communication

From a user perspective, each fair feels like a dedicated marketplace.

From a business perspective, it functions as a controlled campaign environment.

Multi-Market Deployment

The infrastructure was deployed across:

• Romania
• Portugal
• Poland
• Bulgaria

The architecture allows each market to operate independently while maintaining structural consistency and campaign logic alignment.

This ensures scalability without fragmentation.

Business Impact

• Enabled rapid multi-country campaign deployment
• Reduced engineering dependency for commercial initiatives
• Empowered Sales teams with controlled autonomy
• Standardized campaign structure across markets
• Created reusable infrastructure for future vertical fairs

The result is not a campaign landing page, but a modular digital fair ecosystem.

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