Japan’s OOH market stands at an inflection point.
With the launch of MASTRUM through a strategic partnership between Moving Walls and jeki, the industry is moving toward a marketplace-driven future built on automation, mobility intelligence, and global interoperability.
Thousands of media outlets have already been registered on the platform, and it has entered its initial release phase with advertising agencies. The ambition is not incremental improvement — it is structural modernization.
As Srikanth Ramachandran, Group CEO of Moving Walls, noted:
“MASTRUM reflects where OOH is heading globally — toward automation, transparency, and measurable outcomes.”
The Global Context: Digitization of OOH
Across key markets, DOOH continues to increase its share of total OOH budgets. Singapore, Australia, and the UK now allocate more than 50% of OOH spend to digital formats. Malaysia and Indonesia report allocations between 30% and 40%.
The trajectory is clear: automation is reshaping outdoor media.
“Digital is no longer an add-on,” Srikanth emphasized. “It is becoming the dominant layer within OOH.”
Japan, with its dense transit ecosystems and advanced infrastructure, represents one of the most important markets to undergo this transformation.
Mobility + Media: Why This Convergence Matters
A central theme behind MASTRUM is the convergence of mobility and media.
Smart cities and transport networks are evolving beyond infrastructure. Globally, transport authorities such as Singapore’s LTA have entered the media business — recognizing that mobility data and advertising inventory are increasingly interconnected.
Srikanth observed:
“We are seeing a global convergence of mobility and media. Platforms that sit at this intersection will define the next phase of OOH.”
In Japan, where transport environments are integral to daily life, this convergence is especially powerful. MASTRUM positions jeki’s media assets within that larger structural shift.
Building a Japan–Global Bridge
MASTRUM does more than aggregate domestic supply. It connects Japan into a wider global ecosystem.
Moving Walls has established presence across Southeast Asia — including Singapore, Malaysia, the Philippines, Indonesia, Thailand, and Vietnam — and is expanding into India. Beyond Asia, partnerships extend across Africa, the Middle East, South America, North America, and Europe.
In North America and Europe, the Moving Walls demand-side platform integrates with Place Exchange, enabling global campaign execution.
For international advertisers, this creates a simplified pathway into Japanese inventory.
For Japanese media, it opens visibility on a global stage.
Akaishi reinforced this international ambition:
“Global participation and visibility will be key to growing MASTRUM to its full potential.”
From Automation to OOX
The partnership also points toward a broader evolution — OOX — the fusion of offline and online media.
Rather than treating OOH as a standalone channel, OOX integrates physical screens with digital and online touchpoints to deliver unified omnichannel campaigns.
“It is not about digital versus offline,” Srikanth explained. “It is about integration — combining physical and digital environments for maximum impact.”
MASTRUM provides the infrastructure foundation for that integration within Japan.
Technology Roadmap: Generative AI and Operational Efficiency
Looking ahead, the roadmap includes applying generative AI across planning, sales, and operational processes.
The focus is not experimentation for its own sake. It is operational transformation — accelerating workflows and improving how campaigns are configured and delivered.
Business transformation and innovation remain central themes of the partnership.
Responsibility and Industry Leadership
Beyond commercial scale, the collaboration reflects broader responsibility initiatives.
Moving Walls’ “Moving Hearts” initiative connects charities with unused DOOH inventory to increase awareness. A zero-carbon initiative analyzes best practices for OOH media owners.
These programs reflect a wider view of platform responsibility — combining growth with accountability.
The Benchmark Vision
Both leaders aligned on one core objective: make MASTRUM a benchmark platform in Japan — and a meaningful global player.
Akaishi described the project as a test of jeki’s mission and values, emphasizing the importance of growth, data utilization, and omnichannel integration.
MASTRUM is not positioned as a short-term product launch. It represents a structural shift — aligning Japan’s OOH ecosystem with global automation trends, mobility intelligence, and omnichannel execution.
As OOH evolves worldwide, platforms that combine local strength with global interoperability will set the standard.
MASTRUM intends to be one of them.
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