Source: https://oguzerol.com/en/attribution-model-optimization/

Google Ads

# Attribution Model Optimization | Conversion Credit Split

[Oğuz Erol](https://oguzerol.com/en/about-me/)  |  2 min read

The attribution model decides which click gets credit for a conversion. Nothing in the account changes when the model changes — but the picture in your reports changes completely, because which campaign “looks good” depends on it.

## Last-click can mislead

Under default last-click logic, all credit goes to the final step in the funnel. Brand searches naturally sit at that final step, so they look exaggeratedly good, while the upper-funnel campaigns that created the demand look exaggeratedly bad.

## What data-driven attribution changes

Data-driven attribution decides the credit split by looking at your account’s own conversion paths. This makes the real contribution of upper-funnel campaigns visible — but it doesn’t work reliably without sufficient conversion volume.

## A model change also affects bidding

Smart bidding bids based on attributed conversion data. When the model changes, so does the data the algorithm sees; expect a short relearning period afterward, and avoid sudden budget decisions during it.

**How we start.** We first review your current model and conversion path report. Reach out via the [contact page](https://oguzerol.com/en/contact/).

## Frequently Asked Questions

### Will my conversion count drop after changing models?

Total conversions usually stay the same; the distribution across campaigns shifts — some gain, some lose.

### Why do GA4 and Google Ads show different numbers?

The two platforms use different attribution and different lookback windows; even with the [Google Ads and GA4 link](https://oguzerol.com/en/google-ads-and-ga4-link/) in place, the numbers won’t match exactly, and that’s expected.

### How often should this be reviewed?

When the campaign mix changes (a new upper-funnel channel is added) and when conversion volume rises significantly.

[Back to top ↑](https://oguzerol.com/en/attribution-model-optimization/#icerik)

## You may also find these useful

[Google Ads GA4 Link | Without Double CountingLinking GA4 and Google Ads unlocks audience and conversion sharing. Set up wrong, it counts conversions twice. The correct setup and how to check it.](https://oguzerol.com/en/google-ads-and-ga4-link/)[CPA Optimization | Lowering Cost Per ConversionGoogle Ads CPA optimization: target cost-per-conversion strategy, funnel analysis, and conversion-rate improvement to sustainably lower CPA.](https://oguzerol.com/en/cpa-optimization/)[Conversion Optimisation | Turning Clicks Into CustomersIf ads get clicks but no sales, first separate a campaign problem from a page problem. Measurement, landing page and form fixes, in priority order, explained.](https://oguzerol.com/en/conversion-optimization/)

[Browse all articles →](https://oguzerol.com/en/articles/)

WHAT YOU CAN ASK FOR

## How do I work?
Work-hour packages

Tell me about your business and what you need on WhatsApp or by phone; we agree on **a work block of somewhere between 5 and 40 hours** and I start doing what is needed. What you get is not a calendar window — it is net working hours spent directly on your business. I can use 40 hours working three days straight, or deliberately spread it out and finish it over a year — whatever the work calls for. I do not spend my time estimating how long something will take, I spend it doing the work; every hour I spend leaves a lasting result in your business. We keep going for as long as you find it useful.

WORK BLOCKS

## Why not monthly?
Is 40 hours a week?

On a fixed monthly fee both sides are watching the wrong thing: you watch a fixed cost, the other side watches how many more contracts like this they can line up. Working by the hour puts us both in front of the same thing — the real value of the work that got done. I know not having an upfront answer to "how much will this cost in total?" is the natural cost of this model. But instead of paying a fixed fee for months to a setup that is not producing results, you only pay for the qualified time spent on your work — and you see exactly where that time went, start to finish. That is why my clients keep coming back.

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