By Daniel Pedersen, SVP Sales, Assertive Yield
Major events are often treated as traffic spikes, but for publishers, they’re also important stress tests for how well a publisher’s monetisation set-up actually works under pressure.
The 2026 World Cup is a useful pressure point because the spike in audience, spend, and operational risk arrives at once – and publishers that prepare early can turn demand into revenue, rather than watch value leak through a stack built for quieter days.
We’re right in the thick of it now. How can publishers make the most of this moment?
Treat event traffic as a revenue test, not a spike
By the end of the tournament, 48 nations will have competed across 16 North American host cities. An estimated 5 billion people are expected to tune in around the world, and WARC estimates the tournament will drive an additional $10.5 billion in global ad spend during the quarter.
That combination of scale and spend creates a rare window. Streaming CPMs are expected to sit between $60 and $120, but high prices don’t guarantee high returns.
The issue is conversion, because traffic spikes don’t automatically become revenue spikes. When demand surges during a key major match, weaknesses in the stack become visible fast. Client-side header bidding can slow down, bidders can time out, and we’ve seen fill rates fall by 15-25% when CPMs are at their highest.
For publishers heavily reliant on open marketplace demand, such as classified or content businesses – as opposed to publishers with a high share of direct-sold inventory – the risk is even higher. They could be handling 200-300 million monthly impressions, with commercial, product, and technical teams all needing answers from the same system. Under pressure, small inefficiencies quickly become expensive.
Don’t wait for the game to end – adjust auctions in real time
Static setups struggle in dynamic conditions. That’s why the priority is making auctions more responsive to live demand.
Dynamic floor pricing is a simple but high-impact change. Fixed floors are easy to manage, but they don’t reflect how quickly demand can rise during a live match. Without real-time adjustments, premium impressions can clear at average prices while buyers are willing to pay significantly more.
The second shift is moving more auction logic server-side. Browser-based auctions carry too much load during traffic surges, which increases latency and reduces competition. Server-side Prebid helps stabilise performance and maintain competitive pressure when volume spikes.
The goal is straightforward: keep fill rates above 95% while maintaining performance, even if traffic jumps to two or three times normal levels.
Traffic shaping adds another layer of control. Instead of treating all demand paths equally, publishers can prioritise the partners most likely to deliver value. That reduces wasted impressions, lowers infrastructure costs, and helps ensure the highest bidder actually wins.
Make testing fast enough to matter
Infrastructure is only part of the problem; decision-making speed is just as important. During major events, conditions change quickly: audience behaviour shifts, demand fluctuates, and small adjustments can have outsized impact. But many publishers are still working with testing cycles that take weeks or months. By the time a change is approved, implemented, and analysed, the opportunity has passed.
At the same time, external pressures are increasing. AI-driven search platforms and LLMs are reducing referral traffic, and teams are being asked to do more with fewer resources. No-code testing gives teams a faster way to respond without turning every idea into an engineering project.
For instance, one publisher moved from roughly 50 tests a year to more than 300. Teams could configure a test in minutes, deploy to a subset of traffic, and start generating results within seconds. That kind of speed helps how decisions are made. Teams can optimise while demand is still peaking, rather than analysing missed opportunities afterwards.
Build a shared view across teams
Major events don’t just test technology – they test coordination.
Revenue, ad ops, product, editorial, and engineering teams all have a role to play, but they often operate with different data and priorities. That fragmentation slows response times and makes it harder to act confidently in high-pressure moments.
A unified view of performance helps close that gap. When teams can see both advertising and user experience signals in one place, they can make faster, better-aligned decisions.
That might mean adjusting auction settings mid-match, refining page layouts based on engagement, or identifying underperforming demand paths before they impact revenue at scale.
The difference is timing. Issues caught during a live event can be fixed immediately. Issues discovered later are just lessons.
Where to start: five questions before the next big match
Not every publisher needs to overhaul their stack this week. But every publisher should be able to answer these questions before the next major kickoff:
- Do we know our current fill rate under peak load? If the last time you checked was before a traffic spike, you don’t have a baseline – you have a guess.
- Are our floor prices static or dynamic? If a human has to manually raise floors before a big match, you’re already behind live demand.
- How much of our auction logic still runs client-side? If browser-based bidding is still doing the heavy lifting, latency and timeouts will show up exactly when CPMs are highest.
- How long does it take us to test and ship a change? If the answer is measured in weeks, you’ll be analysing the World Cup’s impact instead of capturing it.
- Can revenue, product, and engineering see the same dashboard in real time? If each team is working from different numbers, mid-match decisions will be slow, or won’t happen at all.
If any of these produce a shrug rather than a straight answer, that’s the first place to focus – not the whole stack at once.
The opportunity is there. The question is how much of it publishers actually capture.
The World Cup is the most visible example, but it’s not unique. The same dynamics apply to the Super Bowl, election nights, and any moment where audience attention concentrates at scale. With FIFA projecting $13 billion in revenue for the 2023–2026 cycle, advertiser budgets are already committed.
Major events reward preparation, not participation. When demand surges, the publishers that win are the ones with systems that adapt in real time, teams that can act quickly, and visibility across the entire operation.
The World Cup will deliver the audience and the spend. Capturing your share of that $10.5 billion comes down to what you do before the final whistle.
