Waimia.
DEPARTMENT

AI Online
Advertising

Your media budgets arbitrated by data, not by habit. Creatives tested continuously, ROAS tracked to the euro. The ads that pay, not the ones that reassure.

Google AdsMeta AdsLinkedIn AdsAI creativesROAS
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Marketing · Growth · Leadership
Two ways to spend

On gut feel, or on numbers

Budget run on instinct

You spend, you hope

  • Budget is split once a quarter, then nobody touches it
  • The same three visuals have run for six months, clicks collapse
  • Real return per channel lives in three dashboards and a dead spreadsheet
  • Every media decision is a bet, never a calculation
Budget driven by data

You measure, you reallocate

  • Budget shifts continuously toward campaigns that truly convert
  • Twelve creative variations tested per week, the worn-out retired without debate
  • A single ROAS view, down to real conversion, not the click
  • Every euro arbitrated within the bounds you set
§ Friction

Where the money leaks

  1. The budget going up in smoke

    The media budget is split once per quarter, on instinct, then forgotten. Underperforming campaigns keep spending while the winners run out of air. Nobody reallocates before the invoice arrives.

  2. The wearing-out creatives

    Three visuals have been looping for six months. Click-through collapses, acquisition cost climbs, but producing new creatives needs a brief, a designer, two rounds of edits. So the worn-out ones keep running.

  3. The untraceable ROAS

    How much does each channel really return? The answer lives in three dashboards and a spreadsheet nobody keeps current. Without a consolidated view, every media decision is a bet, not a calculation.

§ Workflows

The control
loop

Workflow
Model
Gain
How
01
Creatives

Continuously tested variations

Claude Opus 4.8
+ ad platforms
12/sem
Hooks and angles adapted per audience, deployed and tested automatically. Winning variants take over, worn-out ones are retired.
02
Arbitration

Budget reallocation

Claude Sonnet 4.6
+ Google Ads
−34%
Budget shifts toward converting campaigns, within bounds you set. No more spend evaporating on a dead audience.
03
Audiences

Refined targeting

Claude Sonnet 4.6
+ CRM
×2,1
Audiences are enriched with real CRM signals, not just clicks. The platform targets profiles that look like your actual customers.
04
Measurement

Consolidated ROAS

Claude Haiku 4.5
+ GA4
1 vue
A single view of return per channel, down to real conversion. No more abandoned spreadsheet: the media decision rests on a maintained figure.
Before control, after control

The same budget, reworked.

Three media indicators, measured before and after going under control, at constant budget.

Acquisition cost
100 % 66 %
−34 %
Average ROAS
1,0× 2,1×
×2,1
Creatives tested per week
0 12
+12
Client case · B2B services
Illustration éditoriale du cas Caserne, budget media rééquilibré.
Caserne · Services B2B
  • Reallocation
  • AI creatives
  • Consolidated ROAS

Caserne, B2B services.
Acquisition cost cut with no budget rise.

We stopped funding dead campaigns because nobody dared cut them.

Marketing leadership, Caserne
−34% acquisition cost
×2,1 average ROAS
0€ extra media budget
See full case →
Guardrails
  • Budget bounds set by you
  • Human validation on every creative
  • ROAS down to real conversion
  • Ad-account access kept with you
§ Tool stack

Tools
deployed

Typical stack · Online Advertising
Category Tool Role
Reasoning model Claude Sonnet 4.6 Budget arbitration, performance reading, per-channel allocation decisions.
Creative model Claude Opus 4.8 Creative concepts, ad hooks and message variations per audience.
Volume model Claude Haiku 4.5 Mass variant generation, format adaptation, labelling.
Connected platforms Google Ads · Meta · LinkedIn Native connectors to ad platforms, control of campaigns in place.
Measurement GA4 · Connecteurs CRM ROAS consolidation down to real conversion, not the click.
Durable workflow LangGraph Continuous test, measure, reallocate loop with budget guardrails.
Before trusting a budget

Three legitimate doubts.

Q.01 Will the AI spend my budget without control?

No. You set bounds per campaign and per channel. The system reallocates within those bounds, never beyond. Any rise above a threshold goes through human validation.

Q.02 Do we need to change platform or ad account?

No. We plug into your existing Google Ads, Meta and LinkedIn accounts. No transfer of ownership: access stays with you, we operate on top.

Q.03 How fast does ROAS move?

The first reallocations act within days. The creative and targeting effect is measured over 6 to 9 weeks, the time the system needs to learn what truly converts for you.

Budget arbitrated.
ROAS tracked.

45 minutes. We look at your current campaigns, price what data-driven control would change. If we have nothing to offer, we say so.