Why is SEA the most powerful growth engine for your business?
Paid referencing (SEA) is the most direct and measurable acquisition lever. Capture the intention to buy at the exact moment when your prospects are looking for your solutions.
Immediate results
Lead Generation and Sales: Get Immediate Results
Unlike SEO, which requires months, SEA generates qualified traffic as soon as your campaigns are put online. Each click comes from a user who is actively looking for your products or services. It is the fastest acquisition channel for generating leads and sales.
Guaranteed visibility
SERP dominance: Be visible where your customers are looking for you
Google Ads occupy the top 4 positions on the results page. Being present in SEA means guaranteeing your visibility on the strategic requests of your market, even in the face of competitors who are better positioned in SEO. You are in control of your presence.
Controlled ROI
Performance management: Control your costs with surgical precision
SEA offers total control over your investments. You define your budget, your bids, your target audiences. Every euro spent is trackable up to the conversion. We are constantly optimizing to maximize your ROAS (Return On Ad Spend) and reduce your CPA.
Our expertise
Our advertising expertise: A total control of networks and formats
From Google Ads to Microsoft Ads, we master all advertising platforms to reach your audiences at all points of contact.
Google Ads (Search & Display)
Capture purchase intent in real time
Search Ads targets users at the exact moment of their search. Display extends your reach across 3 million partner sites. We create campaigns that convert, with powerful ads and accurate targeting.
Text ads
Responsive Ads
Targeting keywords
Google Shopping & Performance Max
Boost your e-commerce turnover
Shopping Ads displays your products with prices and images directly in Google. Performance Max uses Google AI to broadcast on all channels (Search, Display, YouTube, Gmail, Maps). Ideal for e-commerce.
Product flow
Smart Bidding
AI attribution
Microsoft Ads (Bing)
Reach a premium and complementary audience
Bing represents 15% of the search market with an audience with higher purchasing power. Microsoft Ads offers CPCs that are often 30% cheaper than Google, with LinkedIn integration for B2B targeting.
Premium audience
Competitive CPCs
LinkedIn targeting
YouTube Ads & Demand Gen
Develop your reputation and customer engagement
YouTube is the 2nd largest search engine in the world. Demand Gen campaigns reach your audiences on YouTube, Discover, and Gmail with engaging visual formats. Perfect for brand awareness and retargeting.
SEO & SEA Synergy: The “Global Search” Strategy to Dominate the Market
SEO and SEA are not competitors, they are complementary. Discover how their synergy multiplies your results.
Double presence
Digital omnipresence: Take up 100% of the first page of Google
By combining SEO and SEA, you maximize your visibility area. A user who sees your brand in ads AND organic results is 2x more likely to click. It is the 'Search Global' strategy of market leaders.
Data-driven SEO
Data intelligence: Use SEA to accelerate your SEO strategy
SEA generates valuable data: which keywords convert the best? Which landing pages are performing? These insights feed into your SEO strategy to prioritize the content to be created and the pages to be optimized.
Optimized CPCs
Quality Score Optimization: Reduce your costs per click (CPC) sustainably
A site that is well optimized for SEO naturally improves your Google Ads Quality Score: fast loading time, relevant content, careful user experience. The result: lower CPCs and better ad positioning.
Our ROISTE methodology: Transparent and rigorous support
A structured and data-driven approach, from initial audit to detailed reporting, to maximize your return on advertising investment.
01
Free audit and tracking configuration (GA4 & GTM)
We audit your existing campaigns (or your market if you are just starting out) and set up precise tracking. Without reliable data, no optimization is possible. GA4, GTM, improved conversions: everything is in place.
Full audit of existing campaigns
GA4 and Google Tag Manager Setup
Setting up conversion tracking
Definition of KPIs and objectives
02
Advanced account structuring: Hagakure and Nautilus methods
We structure your accounts according to Google best practices: Hagakure method to consolidate data and feed the algorithm, or Nautilus for maximum granularity. The choice depends on your volume and goals.
Optimized account architecture
Thematic ad groups
Audience segmentation and keywords
Adapted auction strategy
03
Continuous Optimization: Smart Bidding and A/B Ad Testing
Optimization is daily: bid adjustments, ad tests (RSA), audience optimization, negative keyword management. We use smart bidding (Target CPA, Target ROAS) to maximize your conversions.
A/B ad testing (RSA)
Optimizing automatic bids
Negative keyword management
Adjusting audiences and targeting
04
Customized reporting: Analysis of real profitability (ROAS & ROI)
Each month, you receive clear reporting with the metrics that matter: ROAS, CPA, conversion volume, evolution of the Quality Score. We analyze real profitability, not vanity metrics.
Real-time dashboard
Detailed monthly reporting
ROAS and ROI analysis by campaign
Optimization recommendations
ROI measurement: ROAS (Return On Ad Spend)
ROAS measures the revenue generated for each euro spent on advertising. An ROAS of 5 means that €1 invested generates €5 in turnover. This is the key indicator that we optimize for our customers.
Our advantages
Why choose our SEA agency rather than internal management?
Outsourcing your SEA to certified experts gives you access to skills, tools and resources that are impossible to replicate internally.
Top 3% of agencies
Google Partner Premier Certified Agency: A guarantee of quality and expertise
The Google Partner Premier certification is reserved for the top 3% of Google Ads agencies. It attests to our technical expertise, the quality of our campaigns and our ability to generate significant results for our customers.
Exclusive beta access
Exclusive access to beta features and priority technical support
As a Premier Partner, we get early access to new Google Ads features and dedicated technical support. Your campaigns benefit from the latest innovations before your competitors.
Dedicated team
Flexibility and responsiveness: A team of experts dedicated to your goals
Unlike single-person internal management, you benefit from a multidisciplinary team: Search, Shopping, YouTube, tracking, analytics experts. We adapt to your peaks of activity and strategic evolutions.
Proven results
Customer cases & Success Stories: Results proven by the numbers
Concrete, measurable results, and satisfied customers. Learn how we maximized their advertising ROI.
× 425PPM
+970%+970%de traffic site en 6 mois
+30+30retombées dont Les Échos, France Bleu, LCI, Europe 1, France Inter, RMC…
« In a few months, We changed the scale . Thanks to press relations, we were visible in the right media. Thanks to SEO, our traffic has literally exploded. And above all, we are finally saying clearly who we are, who we are talking to, and why we are doing it. 425PPM was able to align visibility, positioning and acquisition. It is rare. »
« Une collaboration exceptionnelle qui a transformé notre acquisition digitale. En quelques mois, nous avons multiplié par 3 nos leads organiques tout en réduisant de 50% notre coût par lead. 425PPM a su aligner SEO technique, création de contenu et stratégie d'acquisition pour générer des résultats immédiats et durables. »
+30+30articles dans des médias majeurs, (France Inter, TF1, 20 Minutes…)
« Press relations have clearly been an accelerator. In a few weeks, we went from 500 to more than 5,000 users . The media strategy of 425PPM allowed us to be visible at the right time, in the right media and to give credibility to our position on electrical erasure. »
SEA agency FAQ: answers to your questions about paid search
Answers to the most frequently asked questions about Google Ads, SEA and our support to maximize your advertising ROI.
How much advertising budget should you plan to start with Google Ads?
Google does not impose a minimum budget, but we recommend investing at least €1,500 to €3,000/month to obtain meaningful data and optimize effectively. This budget lets you test different audiences, keywords and ads. For highly competitive sectors (insurance, real estate, legal), expect €5,000+/month instead. On top of this come the agency's management fees, generally between 15% and 20% of the media budget.
What is the concrete difference between SEO and SEA?
SEO (organic search) aims to rank your site in Google's organic results. It is a long-term investment (6-12 months for results), but a lasting one. SEA (paid search) displays your ads at the top of the page immediately, but you pay for every click. SEA delivers instant results and full control, while SEO builds long-term visibility. The two are complementary: SEA generates immediate traffic while SEO is being built.
How long does it take to measure the return on investment (ROI)?
The first results are visible as soon as the campaigns go live. However, allow 2 to 4 weeks to collect enough data and start making significant optimizations. A positive, stable ROI is generally seen after 2 to 3 months of continuous optimization. For e-commerce, results often come faster. For B2B with long sales cycles, allow 3 to 6 months to measure the real impact on your sales pipeline.
Why is the Quality Score crucial for your savings?
Quality Score (QS) is a rating from 1 to 10 that Google assigns to each keyword. It measures how relevant your ad and landing page are to the search query. A high QS (7+) reduces your CPC by 20% to 50% and improves your ad position. Conversely, a low QS (4 or below) increases your costs and limits your visibility. We systematically optimize QS through ad relevance, landing page quality and expected click-through rate.
How are the management fees of a SEA agency structured?
Most SEA agencies charge a percentage of the media budget they manage (generally 12% to 20%) with a monthly minimum (often €500 to €1,000). Others offer a fixed monthly fee. At 425PPM, we prioritize transparency: our fees are decoupled from your media budget to avoid any conflict of interest. We recommend the optimal budget for you, not the one that maximizes our fees.
Is it possible to precisely target a geographic area or an audience?
Absolutely, it is in fact one of the great strengths of SEA. You can target by country, region, city or radius around an address (down to 1 km). You can also target by audience: demographics (age, gender, income), interests, purchase intent, remarketing (visitors to your site), similar audiences, and even customer lists (Customer Match). This precision lets you optimize every euro invested.
What indicators (KPIs) do you follow to measure performance?
We track the KPIs that genuinely affect your business: ROAS (Return On Ad Spend), CPA (Cost Per Acquisition), conversion rate, cost per click (CPC), Quality Score, impression and click-through rates. For e-commerce: revenue, transactions, average order value. For B2B: qualified leads, cost per lead, qualification rate. We avoid vanity metrics (raw impressions, clicks without conversion) that do not measure real profitability.
Do you also manage YouTube Ads and Display campaigns?
Yes, we manage the entire Google Ads ecosystem: Search, Shopping, Performance Max, Display, YouTube Ads (TrueView, Bumper Ads, Discovery), and Demand Gen campaigns. We also work on Microsoft Ads (Bing) to reach a complementary audience. Each channel has its own specifics: Search captures intent, while Display and YouTube build awareness and drive retargeting. We build consistent cross-channel strategies.
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× 425PPM+970%de traffic site en 6 mois+30retombées dont Les Échos, France Bleu, LCI, Europe 1, France Inter, RMC…
