In arbitrage, there’s a strong temptation to address all issues with a quick click. If the CPA goes up, you lower the bid. If conversions drop, you raise the bid. If traffic becomes too costly, you disable half the platforms.
However, this method doesn’t hold up for long. Low bids reduce volume, while high bids drain the budget. That’s why many seasoned arbitrageurs use microbidding, which is one of the most overlooked tools for optimization.
It has a complicated name but a simple concept: instead of managing the entire campaign, you manage individual traffic sources within it.
How does it work? Why does microbidding remain one of the best strategies to lower CPA without sacrificing volume?
What is microbidding?
A typical campaign relies on a single bid for all platforms.
For example, if you’re willing to pay $0.50 per click, this bid applies to all traffic at once. It doesn’t matter if the user comes from a high-quality platform or a source that has never converted.
The problem is clear and timeless: different platforms have different effectiveness. Some might generate leads at $10, others at $50, and some may not produce anything valuable at all.
Microbidding allows you to adjust bids separately for each source, region, website, app, operating system, or other traffic segment.
Simply put, you start paying more where there are results and less where there aren’t.
Why a One-Size-Fits-All Approach Doesn’t Work
Let’s say you launched a campaign across 20 platforms. After a few days, the stats show you:
- 5 platforms are driving the majority of conversions;
- 8 platforms are performing averagely;
- 7 platforms are burning through the budget without results.
If you keep the same bid for all of them, the money will continue to be distributed between good and bad sources almost equally.
This results in a paradoxically counterproductive situation: effective platforms don’t get enough traffic, while weak ones continue to burn through the budget.
Microbidding solves this problem by redistributing bids: the best sources get more impressions and clicks, while the weak ones gradually lose volume or are shut down entirely.
Where Microbidding Is Most Effective
This tool works especially well in formats with a large number of platforms:
- Push;
- Popunder;
- Native;
- In-App traffic.
Such campaigns can have hundreds or even thousands of ad slots, and it’s obvious that there will always be both top performers and underperformers among them. The higher the traffic volume, the greater the impact of microbidding on the final result.
So here’s our advice: start analyzing ad slots within the first few days after launch. Or contact your personal manager if you’re unsure where to look or how to draw conclusions from the data.
How to Start Using Microbidding
One common mistake beginners make is starting optimization too early. If a placement received 10 clicks and no conversions, that doesn’t mean anything at all. After all, any statistics require a certain volume.
Usually, the first decisions are made after collecting a sufficient amount of data. What counts as sufficient:
- 100–200 clicks without conversions;
- stable spending statistics;
- a clear CPA level.
After that, you can move on to adjustments. The logic is as follows:
Is the platform showing a good CPA?
Increase the bid.
Is the platform performing close to target values?
Leave it as is.
Is the platform spending the budget without results?
Lower the bid or pause it.
The key is to avoid sudden moves. Microbidding works better through small, gradual changes than through radical adjustments.
Mistake #1: Disabling Everything at Once
When you first open the statistics by channel, you might be tempted to quickly get rid of half the sources.
But some platforms may show weak results at the start and later deliver high-quality conversions.
Others only perform well during certain hours. Still others start converting after the landing page or offer is optimized.
You get the idea, right?
It’s better to lower bids first rather than delete the source entirely. And if results don’t appear after some time—then it’s time to make tougher decisions.
Mistake #2: Focusing Only on CPA
CPA is important, but it’s not the only metric.
For example, a platform might generate slightly more expensive leads, but at the same time provide:
- better approval rates;
- higher deposits;
- greater LTV;
- a high-quality audience.
If you focus exclusively on conversion cost, you might accidentally disable such sources.
It’s better to analyze the entire user journey, not just the first conversion.
Mistake #3: Forgetting About Volume
Sometimes optimization becomes so aggressive that as CPA drops, the traffic itself disappears (oops!).
Yes, the cost per lead will certainly become more favorable.
But if volume drops by a factor of three, the bottom-line profit may also decrease.
That is precisely why the goal of microbidding is not the lowest possible CPA at any cost, but finding a balance between cost and volume.
Optimize profit, not individual metrics!
How Experienced Teams Use Microbidding
For the large teams Youtarget works with, microbidding has long been part of their daily routine.
They regularly:
- analyze ad zones;
- increase bids on top-performing sources;
- lower bids on underperforming ones;
- work with white and blacklists;
- and use automated rules.
This approach allows for gradual performance improvements without the need to completely overhaul the campaign.
As a result, CPA decreases not by reducing traffic, but by improving its quality.
Conclusion
Microbidding is a systematic approach to more effective budget allocation.
Instead of paying a single price for all traffic, you start investing in each source based on its performance.
And, when used correctly, microbidding helps solve two often conflicting goals at the same time:
- lower CPA;
- maintain (or even increase!) traffic volume.
And in an increasingly competitive environment, it is precisely this balance that often makes the difference between a campaign that simply works and one that scales.
