Bidding Strategies

Maximize Conversions vs Target Impression Share: Outcome or Presence

In short: Maximize Conversions prices every auction by predicted conversion and spends the budget chasing outcomes. Target Impression Share ignores conversion data entirely and bids up to a ceiling you set until it holds a chosen position and share of impressions. They optimize toward goals that do not overlap, which is why one is a performance strategy and the other is brand defense.

By the AdFlint research team · Fact-checked against current Google and Meta platform behavior · Last reviewed July 2026

Maximize Conversions

Automated Google strategy that spends the full daily budget chasing the highest conversion count, with an optional target CPA to constrain cost.

Bids are computed at auction time from signals Google holds, and the budget becomes the real control lever because the strategy is built to spend it. Add a target CPA once conversion data is steady and you want cost discipline. The recurring mistake is switching to it while conversion tracking is broken or counting the wrong action, which trains the system to buy more of something worthless.

Full definition

Target Impression Share

Sets bids to reach a chosen share of impressions at a chosen page position, bounded by a maximum CPC ceiling you define.

You pick absolute top, top, or anywhere on the results page plus a percentage, and Google bids whatever is needed up to your ceiling. It is a visibility strategy, used mostly for brand defense and specific competitive terms where presence matters more than efficiency. The mistake is running it on non-brand terms with a high ceiling, since it buys position whether or not those impressions ever convert.

Full definition

Side by side.

The differences that actually change what happens in your account.

	Maximize Conversions	Target Impression Share
What you name	A budget, and optionally a target CPA.	A page position, a percentage, and a max CPC ceiling.
Conversion data	The entire basis of bidding.	Not used at all.
Bid direction	Up on auctions predicted to convert, down elsewhere.	Up until the position goal is met or the ceiling is reached.
Cost control	Budget plus the optional target CPA.	The max CPC ceiling, which is the only lever.
Right home	Non-brand and remarketing campaigns carrying the performance load.	Brand terms and a short list of must-win competitive terms.
Failure mode	Trained on a broken or trivial conversion action.	A loose ceiling on non-brand terms, buying impressions that never convert.

What actually separates them.

Maximize Conversions will decline the top slot when it predicts no conversion; a position target buys it anyway, which is the entire behavioral gap.

Only the ceiling limits target impression share, and it is the setting most often left too generous, so overspend arrives quickly on competitive terms.

Maximize Conversions underdelivers when tracking is broken; target impression share is unaffected by tracking because it never reads it.

A position target applied across a large keyword set chases position on your weakest terms with the same determination as on your best.

Impression share reporting is available under both, so you can measure visibility without buying it with a bid strategy.

Which one should you use?

Use Maximize Conversions when

Conversion tracking is verified and conversions arrive on a steady rhythm.
The campaign is judged on leads, sales, or calls rather than on presence.
Budget should follow outcomes rather than page position.
You want to add a target CPA later, which requires this strategy first.

Use Target Impression Share when

A competitor is bidding on your brand name and being absent is costly.
A handful of high stakes commercial terms where missing the impression loses the deal.
A launch or event window where share of voice is genuinely the objective.
You have set a deliberate max CPC ceiling and will watch spend while it runs.

Common questions.

Can I use Target Impression Share on my main performance campaign?

You can, and it usually goes badly. The strategy buys prominence with no regard for conversion likelihood, so on broad commercial terms it spends against impressions that were never going to pay back. If visibility matters on non-brand, express it through budget, coverage, and ad quality rather than by handing the bidder a position goal.

My Maximize Conversions campaign is losing impression share. Should I switch?

Check why first. Impression share lost to budget is a budget problem, and switching strategies will not create money. Impression share lost to rank on terms that convert is a target or bid problem, usually solved by loosening the target CPA. Switching to a position target fixes the symptom while removing the conversion intelligence that was protecting spend.

Can I run both, split across campaigns?

That is the normal structure. Brand and must-win terms sit in their own campaign on a position target with a firm ceiling, while non-brand performance runs on Maximize Conversions. Separating them also stops brand conversions, which are cheap and plentiful, from distorting what the performance campaign's model learns.

Or stop choosing between them.

AdFlint picks the setting, writes the ads, and keeps optimizing inside the Google and Meta accounts you already own.

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