Boomatik · expert AI agents

Performance Marketing for SMBs · ROAS guarantor framework + the decisions of a senior media buyer

A senior media buyer doesn't bet budget blindly. They apply a methodology that protects your ROAS before you start, measures properly and kills losing campaigns with judgment. This guide explains the real frameworks a performance marketing expert uses and how they are executed in a Spanish SMB. BOO Performance · senior media buyer AI agent works with this same discipline.

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ROAS

Metric that protects budget

48-72h

Typical kill rules

3×2×2

Creative testing matrix

MTA

Multi-touch attribution

The 6 key decisions of a senior media buyer

What sets an expert media buyer apart from an ad-hoc effort isn't pretty ads. It's these 6 decisions made with judgment every week.

Target ROAS based on real margin

Before you start, calculate the minimum viable ROAS based on your product margin. Without this number, optimizing is playing the lottery. A ROAS of 3 can be a loss at a 25% margin, and a profit at a 60% margin.

Creative testing matrix 3×2×2

At least 3 creative angles × 2 audiences × 2 offers = 12 combinations. Before killing a campaign, confirm you've tested all 12. Most people kill it at angle 1.

Pre-defined kill rules

Every campaign launches with written kill rules: if after €X spent the CPA is Y, it gets killed. Without kill rules, gut feeling decides, and gut feeling lies.

Multi-touch attribution (MTA)

Last-click is misleading for SMBs with a medium-to-long funnel. Data-driven (GA4) or linear models are fairer. The difference can be 30-50% of the calculated ROAS.

Frequency and creative fatigue

A creative lasts 7-14 days before saturating (depends on the niche). Having a continuous creative pipeline is non-negotiable.

Channel diversification · don't concentrate

Google + Meta + TikTok depending on funnel and target. Concentrating 100% on one channel is regulatory + iOS/cookie + algorithm risk. Diversifying protects you.

The ROAS guarantor framework explained

ROAS guarantor is the philosophy: the media buyer doesn't deliver 'ad management'; they deliver a measurable target ROAS. If it isn't met, there's a procedure.

Step 1 · Locked target ROAS

Analysis of real margin + LTV + repeat-purchase ratio. This produces a specific target ROAS for your business. Not generic.

Step 2 · POAS (Profit on Ad Spend)

Beyond ROAS, we calculate POAS: the real profit after product cost + fees + shipping. A positive ROAS doesn't always mean a positive POAS.

Step 3 · Kill rules + escalation rules

Documented before spending the first euro. When to kill, when to scale, when to pause. No opinions, just data.

Step 4 · Weekly iterative optimization

Every Monday: kill the inefficient, scale the good, validate new creatives. No gut feeling. Just data + framework.

What a media buyer looks at every week

CPA

Cost per acquisition

ROAS

Return on ad spend

CTR

Click-through rate

CVR

Conversion rate

A media buyer's typical week · 6 hours

Weekly discipline is everything in performance. What a senior buyer executes every week without ever skipping it.

KPI analysis

1h · review all active campaigns

Kill + escalation

1h · apply kill rules + scale the positive

Creative pipeline

2h · validate new creatives in the testing matrix

Audiences + bid

1h · refine segmentation and bids

Reporting + weekly plan

1h · real POAS number + decisions for next week

Senior performance vs ad-hoc · real differences

An SMB that runs ads ad-hoc usually loses 40-60% of its budget on clicks that don't convert. Senior discipline closes that gap.

Aspect	Senior media buyer	Ad-hoc
Target ROAS	Calculated from real margin	Generic, around 3-4
Creative testing	Systematic 3×2×2 matrix	Test 1 angle and kill
Kill rules	Pre-defined in writing	Gut feeling of the moment
Attribution	MTA or data-driven	Always last-click
Review frequency	Daily + structured weekly	When there are complaints
Creative pipeline	Continuous · 5-10 new per week	Ad-hoc when it saturates
Diversification	Multi-channel with judgment	Concentrated on 1 channel
Reporting	Real POAS + decisions	Only ROAS from the Meta dashboard

Mistakes that burn budget in SMBs

60% of an average SMB's Ads budget is lost to one or more of these mistakes · all of them avoidable.

No locked target ROAS · impossible to measure success · impossible to know when to stop
Last-click attribution · underestimates top-funnel · you kill the campaigns that actually work
Concentration on 1 channel · iOS17 + algorithms = significant regulatory risk
Single creative · saturates in 7-14 days · CTR drops · CPA rises · no pipeline = standstill
No kill rules · losing campaigns survive for weeks on gut feeling
Performance Max without filters · gives away impressions to queries that aren't your customer
Broad audiences without segmentation · high CPA · converting people who were going to buy anyway

"A senior media buyer doesn't deliver ad management. They deliver a measurable positive ROAS and a procedure if it isn't met. The difference is procedure, not creativity."

— BOO Performance philosophy

The tool stack a senior media buyer uses

It's no secret. The quality of the work isn't in the stack but in how it's used. Still, these are the standard professional tools.

Google Ads + Search Console

For search + display · the base of the SMB BOFU funnel

Meta Ads Manager

For social + retargeting · MOFU/BOFU funnel

TikTok Ads Manager

For reach + brand · TOFU funnel if the target fits

GA4 + data-driven attribution

To measure beyond last-click · real MTA

Hyros / Triple Whale

For precise POAS · if volume justifies it

Server-side tracking GTM

To get around the cookie banner + iOS · essential in 2026

Keep going deeper · Boomatik cluster

Related hubs and guides · every discipline a senior expert executes in an SMB.

Hub

Free 30-min initial briefing

No commitment. We leave with a clear scope · a defined target KPI · a concrete next step. If it's not a fit, we'll tell you what is.