“Should we do SEO or PPC?” is the wrong question. The honest answer is that the two channels solve different problems and the right strategy almost always uses both. PPC delivers traffic this week; SEO compounds over months. PPC keeps the lights on while SEO builds an asset. The interesting work isn’t choosing — it is sequencing the two channels so each strengthens the other.
The economics: PPC vs. SEO investment timelines
PPC delivers results immediately. Launch a campaign Monday and clicks arrive by Friday. That speed is valuable when revenue is under pressure or a launch needs traction. SEO delivers results slowly. Publish content this month and meaningful rankings show up four to six months later. The timeline gap determines which channel suits which goal.
Use PPC when you need: immediate revenue, a new product launch, seasonal campaigns where the window is short, competitive keywords you don’t yet rank for, and message testing before you commit to organic content production. Use SEO when you want: long-term assets that keep paying after the bill is paid, structurally lower customer acquisition cost, permanent ownership of keyword real estate, category authority, and growth that compounds rather than resetting every month.
Calculate the true cost per acquisition (CPA) over time. PPC CPA is immediate and trackable: spend 100 euros, get 5 clicks, convert 2 — CPA is 50 euros. SEO CPA is amortized over months and years. Spend 5,000 euros on content in month 1; through month 3 the CPA looks infinite because no traffic has arrived yet. By month 4, early rankings start producing visits. By month 12, the same article has produced hundreds of conversions and the all-in SEO CPA falls to a fraction of the equivalent PPC CPA. PPC was 50 euros forever; SEO started bad and became dramatically better.
The synergy: how SEO and PPC data feed each other
The strongest SEO-plus-PPC strategy uses data from each channel to strengthen the other. Google Ads shows which keywords convert at what cost. Google Search Console shows which keywords drive impressions and clicks (but not conversions directly). Combine the two datasets:
Look at PPC campaign data. Which keywords convert at attractive ROI? Those are the highest-priority SEO targets. If you are paying 2 euros per click for “accounting software for small business” with strong conversion, that is a query worth investing in organically — every organic click on that keyword once you rank well saves the 2-euro click cost permanently.
Look at Search Console. Which keywords rank in the top 10 but produce poor click-through rate? Often the page exists but the snippet does not match the dominant query intent. Use PPC to test ad copy variants on the same query. The winning ad copy informs the rewrite of the organic page’s title and meta description.
The pattern is migration: PPC validates, SEO captures. Run paid campaigns broadly enough to learn which queries genuinely produce business; invest organic content production into the validated subset; then phase down PPC on queries you have organically captured. The compounding savings funds further organic investment.
When PPC is non-negotiable
Some situations demand PPC even for companies that have organic capability. Competitive keyword domains: if a query is dominated by entrenched competitors, paid search can secure above-the-fold visibility while organic builds in the background.
Seasonal spikes: industries where 50 percent of annual revenue arrives in two months (retail Q4, holiday gifting, tax season for accounting software, summer for travel) cannot wait for SEO’s slow ramp. PPC bridges the seasonal window. Off-season is the right time to invest organic content for the next peak.
Product launches: new products start with zero search volume. PPC creates demand and visibility in the first weeks while organic content builds the long-term discovery layer.
Inventory or capacity surges: when you need to push specific volume in a defined window (clearance, launch event, conference promotion), PPC’s speed is the right tool.
Cost-of-acquisition modelling over 24 months
Model channels over 24 months to see the picture clearly. PPC tends to be steady: spend 10K month 1, get 30K revenue at 3x ROAS; spend 10K month 24, get 30K revenue at 3x ROAS. Consistent but flat — the channel does not improve with tenure.
SEO looks the opposite: spend 10K month 1, generate near zero revenue (content is being created, not yet ranking). Spend 10K month 6, generate maybe 5K revenue (early rankings). Spend 10K month 12, generate 25K revenue (compound effects). Spend 10K month 24, generate 60K revenue (two years of content compounding plus link equity).
Over 24 months, PPC produces a flat 3x ROAS curve. SEO underperforms PPC for the first 6 to 12 months and then crosses over. By month 18 to 24 SEO usually overtakes PPC permanently, and the gap continues to widen as content keeps producing without further marginal cost. The 24-month model is what makes the case for initial SEO investment internally — without it, leadership tends to look at month-1 ROAS and conclude PPC is better, which is true short-term and wrong long-term.
Channel cannibalization: how to avoid PPC-SEO conflicts
Many companies run PPC and SEO simultaneously without optimizing the relationship, which creates waste. You bid PPC on “accounting software”, rank position 2 organically for the same query, and both clicks land on the same page. The PPC click costs 8 euros; the organic click costs zero. You are paying for traffic you would receive for free.
This is not always bad — PPC supplements SEO during ramp-up. But once you rank reliably top 3 organically, audit the overlap. Pause PPC on queries where you rank top 3 and the organic snippet is healthy. Searcher behaviour data shows that when both an organic position 1 and a paid ad appear, the majority of clicks go to organic. The PPC budget on those queries mostly subsidises clicks you would receive anyway.
Use PPC instead to learn where to invest SEO budget next. Run paid on 30 exploratory keywords you are unsure about, track conversion data for 60 to 90 days, and the top 10 by ROI become organic content priorities. The cost structure flips: you spend a few thousand euros on PPC learning, then ten thousand on SEO for the validated keywords — and the SEO investment compounds while the PPC spend was a one-time tuition fee.
Attribution models and multi-channel conversion
Most companies default to last-click attribution for ROI calculations. Last-click systematically undervalues SEO because organic search frequently initiates a journey that closes on a different channel weeks later. The classic pattern: searcher reads an organic article in week 1, sees a PPC retargeting ad in week 4, converts via that paid click. Last-click credits PPC with 100 percent; organic was the awareness driver and gets nothing.
Multi-touch attribution corrects the picture. GA4‘s data-driven attribution (the default since late 2023) distributes credit across the touchpoints based on observed contribution to conversion. Time-decay weights recent touches more heavily, position-based weights first and last more, and first-click privileges awareness. Each model tells a different story; the truth usually sits between models, and showing two or three models in your reporting is more honest than picking one and pretending it is definitive.
Holdout testing is the cleanest way to measure incrementality. Pause SEO investment in one segment or geography for a defined period while maintaining it elsewhere; measure the revenue gap. The gap is the incremental contribution. The same logic applies to PPC: paused-PPC tests reveal how much paid search was simply capturing organic-discoverable demand. Real channel value emerges from these tests in a way last-click never reveals.
Scaling: from testing to full optimization
Start small, prove ROI, then scale. The wrong way is committing 50K per month to SEO without testing first. The right way is sequenced: test 30 to 50 keywords with PPC for two to three months, gather conversion data, then launch SEO content production on the top 10 to 15 validated keywords. Scale further only on patterns that have proven out.
This sequencing reduces risk dramatically. You have evidence before you commit content budget. You avoid investing in queries that look attractive in keyword research tools but don’t actually produce business. And the PPC spend during the test period funds itself through the conversions it generates while doubling as research.
Seasonality and event-driven integration
Many businesses have seasonal spikes: Black Friday and Q4 holidays, back-to-school, tax season, fiscal year-end, conference seasons. B2B has its own seasonality through budget cycles and approval calendars.
The cycle to run: pre-season is SEO time. Build awareness content several weeks ahead of the seasonal peak so the rankings have time to mature before demand arrives. Peak season is PPC time. Run aggressive paid campaigns while organic carries the baseline. Off-season is optimization time. Cut PPC spend (low conversion volume) and reinvest into SEO content for the next cycle.
The discipline is publishing seasonal content early. A guide on “best paint colors for bedrooms” published in November ranks for the January demand surge; published in January, it competes against established results from operators who planned ahead. Six to eight weeks of pre-positioning is the typical lead time for seasonal organic content to mature.
Hidden costs of channel switching
Many companies swing wildly between PPC and SEO. “PPC worked last year, so kill SEO.” Then six months later: “organic is cheap now, kill PPC.” This yo-yo is expensive. Pausing SEO doesn’t immediately drop rankings — they persist for several months on inertia — but new opportunities go uncaptured and competitors’ fresh content gradually displaces yours. Restarting SEO after a six-month pause means rebuilding momentum on new queries; the gap is rarely free.
Pausing PPC when it is working to “focus on organic” loses immediate revenue and disrupts retargeting funnels that depended on paid traffic. Maintain a baseline in both channels, shift allocation based on season and performance, but don’t kill either channel entirely without a deliberate plan for the consequences.
Retargeting: where SEO traffic becomes PPC conversion
Retargeting is the cleanest demonstration of SEO-plus-PPC synergy. A user arrives via an organic search result (free traffic), spends time on the page, leaves without converting. Days later, a retargeting ad surfaces them back. Click rates and conversion rates on retargeted audiences run several times higher than on cold paid impressions because the audience has already self-qualified through organic discovery.
The mechanic: drive organic traffic via SEO, tag visitors via the advertising pixel or first-party identifiers (with proper consent), and retarget with PPC creative tailored to the content they consumed. The “wasted” organic traffic — visitors who didn’t convert on first visit — becomes warm audience for paid spend at a fraction of cold-acquisition cost. Done well, retargeting compounds the value of every organic visit.
Audit your current spend before choosing
Before reallocating between SEO and PPC, audit what you are actually spending. Track monthly spend by channel including software, agency or freelance fees, in-house labor cost (often forgotten), and tools. Track monthly revenue and conversions by channel through GA4, the CRM, and any closed-loop attribution. Calculate CPA and ROAS by channel honestly.
The audit usually surfaces inefficiencies hidden in plain sight: PPC running on queries you already rank top 3 organically, SEO content production in topics that PPC data already shows are low-converting, in-house SEO labor not counted as cost while agency PPC is, retargeting campaigns running on cold audiences instead of organic-warm ones. Fixing these usually saves a meaningful percentage of total spend before any channel reallocation conversation begins.
Keyword drift: catch declining opportunities early
Search demand shifts. Tracking keyword drift over time helps you catch declining opportunities before they disappear entirely. The discipline: quarterly audits of your published articles, tracking search volume and position per primary keyword. Volume that drops 30 percent or more over four quarters is usually a signal that the query phrasing has migrated rather than that demand has died — users are searching for the same intent with different words.
The fix is rewriting the article to target the new dominant query phrasing, restructuring sections to mirror the new question form, and re-publishing. Search Console’s query data plus Google Trends together usually reveal the new phrasing within a few minutes of investigation. Pages saved this way recover their traffic without abandoning the URL or the link equity it has accumulated.
SEO and PPC succeed when aligned, not opposed
SEO and PPC are both customer acquisition channels. One is fast and expensive, the other is slow and structurally cheaper. A mature strategy uses both, migrating validated keywords from paid to organic over time while maintaining paid coverage on queries where organic ranking remains out of reach. By month 18 to 24, well-executed SEO-plus-PPC integration usually produces meaningfully better revenue than either channel alone, at meaningfully lower blended CPA.
The choice isn’t binary. Run both for 3 months, collect data, then optimize allocation based on observed performance and the channel cycle dynamics described above. That removes religious debate and replaces it with mathematics.
LaFactory orchestrates SEO and PPC together: paid validates, organic captures, retargeting closes. Contact us to scope a dual-channel strategy matched to your budget and your seasonality.