What M13h does

M13h is a Paris-headquartered data marketing consulting firm founded in 2014, operating as a subsidiary of Cosmo5 Group, an international digital performance marketing conglomerate with 1,200+ experts across 30+ countries. The firm serves enterprise clients — primarily large international brands and luxury groups such as LVMH, Dior, Sephora, Carrefour, Salomon, Clarins, and L'Occitane — across fashion, retail, insurance, gaming, cosmetics, and technology sectors. M13h delivers end-to-end data marketing consulting structured around a four-phase methodology: THINK (strategy), BUILD (tool and cloud platform deployment), RUN (performance optimization), and EMPOWER (digital transformation acceleration). The firm operates from offices in Paris, Lyon, and Madrid, and is structured as a Société par Actions Simplifiée (SAS) with €1,000 share capital.

M13h's service portfolio spans Marketing Mix Modeling (MMM) advisory, ETL implementation with platforms such as Funnel, Fivetran, and Adverity, server-side tracking modernization via Google Tag Manager Server-Side and Addingwell, Google Analytics 4 setup, marketing automation (Brevo), Customer Data Platform construction, data governance, and RGPD/privacy compliance. The firm has built recognized expertise in ETL-centric marketing stack architecture and server-side tagging — areas positioned to address cookieless tracking, ad-blocker evasion, and signal-quality degradation challenges facing advertisers. M13h does not own proprietary software IP; its technical dependencies are third-party martech platforms, and its differentiation comes from architecture, integration, and implementation know-how. Documented client outcomes include +28% ROAS and -18% CAC reduction for Jacquemus, 7,000+ new CRM contacts for Fondation Le Refuge, and 15 tracking events / 5 KPIs implemented for Décostory.

M13h generates revenue through professional services engagements, custom-quoted per project based on scope and complexity, sold via direct enterprise consulting engagement. The go-to-motion is consultative field sales leveraging the Cosmo5 Group network for cross-border client acquisition. Laetitia Lanfranchi serves as Présidente, with Jonathan Dupasquier and Hadrien de Nijs as Directeurs Généraux. No external funding rounds are disclosed, suggesting the firm is either organically financed or funded via its parent conglomerate. The company is RGPD-compliant under French data protection law and processes data in accordance with CNIL recommendations.

Name

M13h

Legal name

M13h

Website

https://m13h.com

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

11–50 employees

Short description

M13h is a Paris-based boutique data marketing consultancy serving enterprise brands across luxury, retail, insurance, and tech through four-phase engagements spanning strategy, implementation, optimization, and transformation. It operates from Paris, Lyon, and Madrid as a subsidiary of Cosmo5 Group.

Ownership category

akta.pro rank

Product category

Marketing and Advertising Consulting

NAICS

Marketing Consulting Services (541613), Computer Systems Design Services (541512)

SIC

Services-Management Consulting Services (8742), Services-Computer Integrated Systems Design (7373), Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro primary industry

Enterprise Application Data Migration & Master Data Management Services (BPAEAGAJ)

akta.pro secondary industries

Data Monetization & Data Products Services (BPAEAHAL), Data Privacy, Consent & Compliance Management (HDAEADAG)

Keywords

• Data marketing consulting
• Marketing mix modeling
• Marketing analytics services
• Server-side tracking implementation
• Modern data stack deployment

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Data Marketing Consulting Services: M13h generates revenue through consulting engagements that cover the full data marketing value chain: strategy definition (Think), tool deployment and cloud platform construction (Build), performance optimization (Run), and digital transformation acceleration (Empower). Services include data marketing strategy, analytics implementation, customer data platform design, governance, and team training.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

M13h is a data marketing consulting firm that designs and deploys tailored strategies and implementations across the entire data value chain. Rather than selling proprietary software, the firm delivers a four-phase service framework — Think (strategy), Build (tools and cloud platforms), Run (performance optimization), and Empower (transformation and change management) — that covers data marketing strategy, ETL implementation, server-side tracking modernization, web analytics, marketing automation, CRM segmentation, and data governance. Its offering targets enterprise brands seeking to consolidate fragmented marketing data, comply with privacy regulations, and measure incremental marketing performance through approaches such as Marketing Mix Modeling.

Product overview

M13h is a data marketing consulting firm (cabinet de conseil en data marketing) that designs and deploys tailored approaches by putting data at the service of marketing performance. Rather than a single software product, M13h offers a portfolio of consulting services structured across four phases — THINK (strategy definition), BUILD (tools and cloud platform deployment), RUN (performance optimization), and EMPOWER (transformation acceleration) — addressing the full data value chain. Key service lines include MMM (Marketing Mix Modeling) advisory, ETL implementation (with platforms such as Funnel, Fivetran, Adverity), server-side tracking modernization (via Addingwell and GTM Server-Side), web analytics setup (Google Analytics 4, Google Tag Manager), marketing automation (Brevo), CRM segmentation, modern data stack deployment, and data governance/privacy compliance. M13h also delivers campaign performance optimization and lead generation campaign management. The firm operates as part of the Cosmo5 Group and serves major brands across luxury, retail, finance, sports, and digital sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• Think — Data Marketing Strategy Strategic consulting engagement covering data marketing roadmap definition, omnichannel customer experience design, performance measurement strategy, cookieless transition planning, and data privacy strategy alignment — the strategy phase of M13h's end-to-end framework, targeting CMOs and marketing leaders of ambitious enterprise and mid-market brands.
• Build — Tools & Cloud Platform Deployment Implementation service covering data collection tools (Analytics, CRM), adtech/martech stack deployment, modern data stack architecture (ETL, CDP, BI), and performance dashboards — the build phase of M13h's framework, deployed for enterprise clients including LVMH, Dior, Jacquemus, FDJ, OVHcloud, and Decostory.
• Run — Performance Optimization Operational consulting engagement delivering ongoing marketing use case execution, data analysis and insights, conversion rate optimization, project management, and operational efficiency improvements — the run phase of M13h's framework, targeting CMOs and performance marketing teams driving ROAS and reducing CAC (e.g., +28% ROAS, -18% CAC for Jacquemus).
• Empower — Digital Transformation Acceleration Change management and capability building service covering data governance setup, new data usage adoption, internal data sharing policies, and team training/coaching — the empower phase of M13h's framework, designed to accelerate organizational digital transformation and data maturity for enterprise clients.
• Marketing Mix Modeling (MMM) Advisory Strategic consulting on Marketing Mix Modeling to measure incremental marketing impact across online and offline channels and funnel stages — advising clients on MMM tool selection, model construction, operationalization, and long-term measurement strategy. Includes attribution analysis and incrementality testing.
• ETL Implementation & Optimization Implementation and optimization of marketing ETL platforms (Funnel, Fivetran, Adverity) to centralize data from disparate media, e-commerce, and CRM sources into cloud data warehouses (Salesforce, Azure, GCP) or BI environments, enabling consolidated reporting and reverse-ETL data activation for enterprise marketing teams.
• Server-Side Tracking Implementation Modernization of client tracking infrastructure using Google Tag Manager Server-Side (sGTM) + Addingwell to bypass ad blockers, improve first-party data quality, ensure RGPD compliance, and enhance advertising platform signal volume and match quality — demonstrated via +10% event volume, +34% Meta event match quality, +28% ROAS, and -18% CAC at Jacquemus.
• Web Analytics & Tracking Setup Audit and implementation of web analytics solutions including Google Analytics 4 (GA4), event tracking plan design, Google Tag Manager configuration, Consent Mode V2, advanced conversion tracking, and analytics training for client teams — demonstrated with 15 tracking events, 5 KPIs, and 3 data sources consolidated for Decostory.
• Marketing Automation & CRM Segmentation CRM modernization and marketing automation setup using platforms such as Brevo, including fine-grained audience segmentation and automated scenario creation for conversion, loyalty, and reactivation — demonstrated in the Fondation Le Refuge engagement.
• Campaign Performance Optimization Digital advertising campaign management and optimization across Meta Ads, Google Ads, TikTok Ads, Snapchat, and DV360, leveraging improved tracking data (Meta Advanced Matching, Google Enhanced Conversions) to maximize ROAS and reduce customer acquisition cost for enterprise clients.
• Lead Generation Campaign Management Meta Lead Generation campaigns to acquire new CRM contacts at scale, demonstrated through the Fondation Le Refuge project which integrated over 7,000 new contacts into the CRM via compliant tracking and automated workflows.
• Data Governance & Privacy Compliance Data governance frameworks and privacy compliance implementation under CNIL/RGPD, including cookieless strategy, first-party data collection, consent management (via Didomi, OneTrust, Commanders Act), and internal data sharing policies for enterprise marketing and data teams.

Quantifiable outcome

• +10% event volume, +34% Meta event match quality, +28% ROAS improvement, -18% CAC reduction for Jacquemus
• +2 more outcomes

Named customers15 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration19 records

Feature3 records

Partnerships

Five partnerships are on record, tiered core.

• AdveritycoreTechnology or IntegrationETL platform partnership for data centralization. M13h uses Adverity to help clients consolidate data from multiple sources (GA4, Meta, Google Ads, Bing) into unified dashboards.
• FivetrancoreTechnology or IntegrationETL partnership for data collection from marketing platforms to cloud environments. M13h leverages Fivetran's pre-built connectors for marketing and e-commerce data.
• dbtcoreTechnology or IntegrationData transformation platform partnership for building analytics pipelines and data models in the modern marketing stack.
• AddingwellcoreTechnology or IntegrationServer-side tracking and tag management partnership. Addingwell provides the server infrastructure for sGTM implementations, enabling cookieless-compliant tracking.
• FunnelcoreTechnology or IntegrationETL partnership for media data centralization and reporting. Funnel provides data connectors and has developed MMM capabilities for marketing measurement.

Scale indicators6 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Ekimetrics: Paris-based marketing mix modeling and marketing effectiveness consultancy. Directly comparable on MMM, incrementality, and marketing measurement — a core M13h service line.
• Converteo: Paris-based data marketing consulting firm offering analytics, CRM, and marketing performance services to enterprise clients across France. Closest head-to-head competitor to M13h in the French data marketing consulting niche.
• Artefact: French data and AI consulting firm offering data marketing, marketing measurement, and customer data platform services to enterprise clients. Competes with M13h in similar martech transformation engagements.
• fifty-five: French data marketing consulting firm (part of the Brandtech Group) specializing in analytics, data strategy, and digital measurement for global brands. Directly comparable in services, geography, and client profile.
• Jellyfish: Global digital marketing agency with strong analytics, media planning, and martech implementation practices. Comparable on campaign performance optimization and modern data stack deployments.

Broad incumbents

• Accenture Song: Accenture's creative, marketing, and commerce practice offering data-driven marketing transformation at global scale. Overlaps with M13h on martech implementation and analytics engagements for large enterprise clients.
• Publicis Sapient: Global digital transformation arm of Publicis Groupe offering martech, data, and analytics services to large enterprises. Wider portfolio but overlapping on data stack deployment and digital transformation work.
• Devoteam: European IT consultancy with a strong data, cloud, and martech practice. Overlaps with M13h on cloud data platform deployments and digital transformation projects.
• Capgemini Invent: Digital innovation and transformation consultancy within Capgemini, covering data, martech, and customer experience. Comparable on large-enterprise digital and data transformation engagements.
• Merkle: Global data-driven customer experience agency (Dentsu) offering CRM, analytics, and martech services to enterprise brands. Comparable on CDP implementation and data-driven marketing transformation work.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/m13hconsulting
• Facebookfacebook.com/M13hConsulting
• LinkedInlinkedin.com/company/m13h

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about M13h