How Japan's Transit Media Cut Manual Work and Scaled DOOH
Japan · Transit DOOH · Media Digitization · Campaign Automation · Programmatic Buying
▸ The Challenge
Japan's OOH market needed a more efficient way to connect diverse media inventory with growing local and international advertising demand. jeki wanted to build a scalable marketplace that could simplify media transactions and unlock new demand.
▸ What We Did
- ▸Digitized OOH inventory
- ▸Automated media transactions
- ▸Enabled programmatic buying
- ▸Connected jeki to global demand
Why it worked: MASTRUM brings diverse Japanese OOH inventory into a unified marketplace, combining automation and programmatic capabilities to make media buying more efficient and connect Japanese inventory with global advertisers.
▸ The Proof
34,000
Screens integrated
85%
Repetitive admin work eliminated
17.3M
Weekly commuters reached through Jeki's network
jeki × Moving Walls · JapanSource: campaign reporting · August 19, 2025 · movingwalls.com
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