“Well–managed SEA/SMA campaigns, solid results and a reliable team we enjoy working with. Thank you, ESV!”
Guillaume Delafosse
Digital Director
DATA AGENCY
Enable your data
Our Data Marketing services
Although data is central to our business, its dispersion across a multitude of tools that are sometimes poorly interconnected, regulatory constraints, and the challenge of multichannel attribution undermine its effective use and require a comprehensive approach to data quality, in order to ensure accuracy, completeness, and consistency. We make data collection more reliable through well-structured tagging plans, understand user journeys by putting analytics tools to work for your objectives, and facilitate the interpretation of your performance using dynamic, customized dashboards. By ensuring that your data accurately reflects your business, we create the conditions for you to make informed decisions.
- Tag Management Systems: Google Tag Manager, Tealium, or Tag Commander — whatever tool you use, we implement tags on your site and monitor the daily proper functioning of your advertising tools.
- Tagging plan: We assist you in defining your measurement objectives and implementing the associated tracking system. With experience in all the leading CMS platforms (Prestashop, Shopify, WordPress, etc.) and multi-sector expertise, we work directly with your technical teams.
- WebAnalytics Tools: GA4, Piano Analytics or Matomo: we configure your tools, train you for their use and set up personalized reports.
- Server-Side Tracking: In a context where ad blockers and browser restrictions limit client-side tracking, server-to-server (S2S) tracking is becoming essential for reliable and comprehensive data collection, better GDPR compliance, and improved website performance.
- Reporting Dashboards: our dashboards centralize all your channels and markets in real time, with a custom-designed layout for optimal performance visualization. Enabling you to spot trends and anomalies at a glance, they provide invaluable decision-making support for immediate strategic adjustments.
Our Data Method
Tracking is at the heart of any successful digital strategy. Without reliable data, it is impossible to measure results, optimise budgets or understand customers. The rule is simple: you can’t improve what you don’t measure.
But tracking is evolving rapidly. Between the GDPR, the end of third–party cookies and the rise of AI, traditional methods are reaching their limits. The companies that are coming out on top are those that are thinking ahead: first–party data, server–side tracking, new acquisition channels… These are all essential tools for staying competitive and making the right decisions in real time.
1
Audit & Scoping
Current situation and objectives
Define customer journeys, identify existing tools and analyse the business model and how the website operates: checking tags, consent mode, CMP, enhanced conversions and CAPI.
2
Marking plan
Your data roadmap
Specifications for developers and the project team: to define what we wish to track and measure on the website, identify the user interactions to be analysed, and determine the relevant data to be collected.
3
Datalayer design
Storing useful information
Creation of a temporary memory area listing the events to be tracked and the metrics to be collected, which is then made available to your tracking tools in the form of structured, centralised data.
4
Installing the stack
From data collection to data analysis
Support with the configuration and validation of the main tools used to manage the data flow on your website: GA4, CMP, Google Tag Manager, etc.
5
Implementation
Activating the tracking system
Implementation of the DataLayer and configuration of the tagging plan using GTM tags, in accordance with the defined structure.
Enable server-side processing
Instead of sending the data directly from the browser to each platform, we first route it through a server that we control: it receives the data, cleans it, enriches it, and then redistributes it.
The server therefore acts as an intermediary between the user and the data’s destinations. It can be hosted on our own infrastructure or with a specialist service provider. The data becomes first-party data, which you own. This helps to overcome issues such as ad blockers, consent refusals and restrictions on third-party cookies.
resilience to blockages
Not affected by ad blockers or browser-related restrictions.
Enrichment of first-party data
Add email, telephone number and order value for better CRM.
Enhanced signals for algorithms
Recover up to 40% of lost conversions.
GDPR compliance
Data collected and transmitted under your control.
Our customers talk about us
‘We are very satisfied with ESV’s support, both on a personal level and in terms of results. Our collaboration allows us to get the most out of our investments.’
Christelle Dahan
Digital Acquisition Project Manager
“In a competitive market, the team has successfully optimised our customer acquisition costs through effective management, generating a high volume of leads whilst meeting our ROI targets. Their excellent understanding of the insurance sector is a real asset.”
Arthur Pied
Marketing Director
‘ESV’s tailor–made support enables us to roll out effective campaigns that are fully aligned with our objectives. We appreciate the transparency of our exchanges and ESV’s commitment to continuous improvement.’
Cécile Colson
Head of Resource Development
‘Structured and reassuring support, with fluid and human exchanges, and a good understanding of our business challenges. The team is also responsive to market and platform developments. A reliable partnership, which is becoming increasingly rare.’
Benoit Jucobin
Digital & E-Commerce Director
“A very positive working relationship with highly effective operational delivery. Responsive and proactive, the team keeps itself constantly up to date with the latest developments, enabling it to make recommendations that are perfectly tailored to our needs.”
Caroline Ung
E-commerce Manager
FAQ
Data is only valuable if it can be turned into action. Using customized dashboards (Looker Studio), we centralize your cross-channel KPIs. We don't just report the figures: we interpret them to adjust your budgets in real time, identify untapped pockets of growth, and maximize your customer lifetime value (LTV).
A tagging plan is not just a series of tags; it is the foundation of your business intelligence. Without rigorous, customized tagging (via GTM or Piano), your bidding algorithms (Google Ads, Meta) are flying blind.
At ESV, we design tagging plans that don't just measure “visits,” but track strategic micro-conversions and the real value of your leads. Optimal tagging eliminates gray areas in your sales funnels, ensures the reliability of your KPIs, and, above all, provides high-quality data to advertising AI to maximize your ROAS.
Cookie-less marketing requires you to regain control over your data. We support our clients in implementing server-side tracking and collecting first-party data. This allows you to restore the reliability of your reports and continue to feed advertising algorithms with accurate conversion signals, despite browser restrictions.
This has become a necessity to bypass ad blockers and iOS limitations (ITP). By sending data from your server rather than from the user's browser, you can recover up to 20% more conversion data.
We implement Consent Mode solutions and configure your tools (CMP) to respect user choices while minimizing data loss through statistical modeling.
Yes, we go beyond the “Last Click” model to analyze multi-touch attribution models. This allows us to assess the role of each channel (SEA, Social, Display, SEO) in the final conversion journey.