Supply Path Optimisation

Building a Smarter Route to Premium Media

The best supply path isn't the shortest one. It's the smartest one

Why Supply Path Optimisation Matters

Supply Path Optimisation (SPO) is the practice of identifying the most efficient, transparent, and high-quality route between an advertiser and a publisher in programmatic advertising. Rather than buying the same impression through multiple intermediaries, SPO consolidates spend through trusted supply partners that offer better inventory quality, lower operational costs, and greater transparency.

In today's programmatic ecosystem, a single impression is often available through several SSPs and exchanges simultaneously. This creates duplicate bid requests, fragmented reporting, hidden fees, and unnecessary complexity—long before an advertiser ever sees the inventory. SPO removes these inefficiencies by prioritising direct, verified, high-quality supply paths over indirect, reseller-heavy ones.

What's Actually Happening in the Supply Chain

Most publishers don't sell inventory through a single path—they authorize multiple SSPs and exchanges to resell the same impressions, in the hope that more competition drives higher yield. Each of those paths generates a separate bid request for the same ad slot, and DSPs end up bidding against copies of themselves without knowing it.

The industry does have standards designed to make this visible: ads.txt and app-ads.txt let publishers declare who is authorized to sell their inventory; sellers.json requires each SSP to disclose whether a seller relationship is DIRECT or RESELLER; and the OpenRTB SupplyChain (schain) object records every intermediary an impression passes through before it reaches a buyer. In principle, a buyer can inspect the schain object and see exactly how many hops—and which companies—stand between them and the publisher.

In practice, most buyers never look. SPO is what turns that dormant transparency data into an active buying decision—systematically favouring the shortest, most-direct, best-declared paths instead of leaving it to chance.

TRADITIONAL

Fragmented Supply Path

06 HOPS
Multiple intermediaries create duplicate paths, additional fees and unnecessary auction complexity.
01 Advertiser / DSP
02 Exchange A
03 Reseller SSP
04 Exchange B
05 Ad Server
06 Publisher
KLARION APPROACH

Direct Supply Path

03 HOPS
Fewer intermediaries create a cleaner path, stronger transparency and less duplicated bidding.
01 Advertiser / DSP
02 Klarion
03 Publisher

Benefits for Advertisers & Publishers

For Advertisers

Invest with more confidence.

A well-executed SPO strategy helps advertisers create a cleaner, more transparent and efficient route to premium media.

  • Improve transparency across the media supply chain
  • Reduce unnecessary intermediary fees and media wastage
  • Access premium publisher inventory through trusted partners
  • Minimise fraud and invalid traffic with verified supply
  • Improve auction efficiency and bid consistency
  • Gain richer contextual and inventory signals before making bidding decisions
  • Deliver stronger campaign performance through cleaner, higher-quality supply
For Publishers

Unlock the full value of inventory.

Direct relationships and richer supply signals help publishers attract better demand while building a more efficient and sustainable monetisation model.

  • Reduce duplicate auction requests and infrastructure costs Reduce duplicate auction requests and infrastructure costs
  • Attract higher-quality advertiser demand
  • Improve auction efficiency and win rates
  • Increase the value of premium inventory by exposing richer metadata and audience signals
  • Strengthen long-term relationships with agencies and advertisers
  • Build a more sustainable, transparent monetisation model

The Klarion Approach to SPO

At Klarion, we treat Supply Path Optimisation as a starting point, not an end state. The next step is Supply Intelligence—where every impression is enriched with contextual, attention, quality, and commerce signals before it ever reaches the buyer.

By combining premium supply, intelligent curation, and signal-rich inventory, Klarion helps advertisers make better decisions while helping publishers realise the full value of every impression. Because the best supply path isn't just the shortest one—it's the one that delivers the greatest intelligence, trust, and measurable outcomes.

Fewer hops. More intelligence. That's the smarter route.