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the data agency


The Internet generates titanic volumes of data: behavioural, commercial, advertising… Such data have become essential to understanding user needs and develop a smarter marketing approach. Yet, connected devices and communication channels are multiplying and changing so fast that harnessing the power of innumerable data streams has become an incredibly delicate task.

fifty-five helps you collect and organise your data, to let you monitor and optimise the performance of your digital assets and acquire and retain customers more efficiently.


Our customers

  • McDonalds's McDonalds's


  • Danone Danone


  • Air France Air France

    Air France

  • Se Loger Se Loger

    Se Loger

  • Axa Axa


  • Renault Nissan Renault Nissan

    Renault Nissan

  • Smzdm Smzdm


  • L'Oréal L'Oréal


  • Carrefour Carrefour


  • Google Google




  • Crédit Agricole Crédit Agricole

    Crédit Agricole

  • PSA Peugeot Citröen PSA Peugeot Citröen

    PSA Peugeot Citröen

  • Lacoste Lacoste


  • 3 Suisses 3 Suisses

    3 Suisses

  • Pages Jaunes Pages Jaunes

    Pages Jaunes

  • Ferrero Ferrero


  • Bouygues Bouygues


  • François Hollande 2012 François Hollande 2012

    François Hollande 2012

  • Le Crédit Lyonnais Le Crédit Lyonnais

    Le Crédit Lyonnais

  • Accor Accor


  • BNP Parisbas BNP Parisbas

    BNP Parisbas

  • Badoo Badoo


  • HP HP


  • Richemont Richemont




Download our case studies

B&B Hôtels | Mobile Mediabuy & Measurement
  • B&B Hôtels | Mobile Mediabuy & Measurement
  • Tooway | Facebook/SEA synergies
  • Mercure | Webtesting
  • Ferrero Kinder | Smart Survey
  • Ferrero | Cookie Consent
  • PagesJaunes
  • Air France
  • Lacoste
  • Vente-privé
  • Pimkie

How can we precisely measure the ROAS of mobile advertising campaigns?

Industry verticals

  • Automotive

    • Citroën
    • Dacia
    • Elite Auto
    • Oscaro
    • Peugeot
    • Renault
    See all Close
  • Cosmetics

    • Beauté-Privée
    • Biotherm
    • Clarisonic
    • Lancôme
    • L'Occitane en Provence
    • L'Oréal
    See all Close
  • Food

    • Bel
    • Danone
    • Ferrero
    • McDonald's
  • Banking, Insurance & Finance

    • AXA
    • AXA Family Protect
    • BNP Paribas
    • Carrefour Banque
    • Cétélem
    • La Mutuelle Générale
    • LCL
    • MAIF
    • MMA
    • Sofinco-Finaref
    See all Close
  • Luxury

    • Adamence
    • Armani
    • Balenciaga
    • Baume & Mercier
    • Boucheron
    • IWC
    • Jaeger Le Coultre
    • Mont Blanc
    • Panerai
    • Piaget
    • Puig
    • Roger Dubuis
    • Saint Laurent
    • Van Cleef & Arpels
    • Vacheron Constantin
    See all Close
  • Media, Local & Entertainment

    • Badoo
    • Bouygues Immobilier
    • Bouygues Télécom Régie
    • Efficity
    • Fotolia
    • Google MEEL
    • La Fourchette
    • Le Monde
    • Ouest France
    • PagesJaunes
    • Quotatis
    • Smartbox
    • Solocal
    • Vivastreet
    See all Close
  • Retail

    • 3 Suisses
    • Darty
    • Delamaison
    • Lacoste
    • Maisons du Monde
    • Pimkie
    • Pixmania
    • Quelle
    • Vente-Privée
    • SNZDM
    See all Close
  • Healthcare, Energy & Government

    • Actiris
    • EDF
    • François Hollande 2012
    • Pfizer
    • Schneider Electric
    See all Close
  • Technology

    • Bouygues Télécom
    • Hewlett Packard
    • OVH
    • SFR
  • Travel

    • Accor
    • Air France
    • B&B Hôtels
    • Ibis
    • Mercure
    • Pierre & Vacances Adagio
    • Pierre & Vacances Village Club
    • Pullman Hôtels
    • Sofitel
    • Voyage-privé
    See all Close

About Us


We help advertisers leverage their data to increase business performance and adopt a smarter marketing approach. We provide services and software solutions to help them through project completion.

As data volumes are surging, our ability to process highly diverse formats and huge data sets has never grown so fast. Our habits are deeply transformed by what we call “Big Data”. Properly harnessed, the data deluge can mean greater efficiency and considerable time and cost savings.

55% of people entering a store will walk out having purchased something.

On the internet, this conversion rate falls to 2.1%

As estimated by Google and Kantar Media for French e-commerce in April 2013

fifty-five helps you collect and organise your data, to let you monitor and optimise the performance of your digital assets and acquire and retain customers more efficiently.
Read more about our solutions and services.

Innovative company

fifty-five is a certified “Jeune Entreprise Innovante” (Young Innovative Company) and is supported by OSEO, the French agency for Innovation and SME development. Together with 2,000 other carefully selected start-ups, fifty-five is a member of the Oseo Excellence network. We design solutions to meet marketers’ needs with powerful yet simple software: dashboard, data visualisation tools and data products.

Our milestones

  • 55 is officially launched

  • 10th employee

  • Member of Bpifrance Excellence and “Young Innovative Company"

  • We start doing media-buying

  • Google Analytics Premium launched in France, we are a certified reseller

  • 55th employee

  • Our mining platform is launched,
    after 3 years of R&D

  • 55 UK is launched,
    we are in London!

  • 55 Hong-Kong is launched

  • 100th employee

  • We are the first Google Analytics Premium reseller in mainland China

The team

Co-founded by former Google executives in 2010, fifty-five is the combination of four trades: software integration, consulting services, SaaS development and digital media-buying.
We provide innovative services and solutions to help advertisers develop smarter marketing approaches: optimise site and user experiences, improve acquisition strategy and enrich customer knowledge.

Marketing strategy, digital media-buying, tracking, web analytics, data mining, statistics and machine learning, data visualisation, engineering… Our team brings together a unique mix of complementary skills, all dedicated to improving your marketing.

Read more about the co-founders Back to the team

News & Events


  • Meet up Paris.js

    fifty-five accueillera dans ses locaux le prochain meetup Paris Javascript. Au programme : talks et lightning talks. . Découvrir le programme complet .
  • CMO Summit, Dublin

    The 3rd edition of the CMO Summit organized by GDS International will once again gather marketing leaders and senior executives to explore and discuss the digital forces transforming their businesses.. Come and meet Rob Fenton (Managing Director UK), Kim Tran (Head of consulting UK) and Hugo Loriot (Media Technologies Director).
    Invitation and programme on CMO Summit’s official website.
  • Adobe Digital Marketing Symposium, Paris

    The Symposium 2015 combines the best experts to discuss the revolutions to come in digital transformation. Join Antoine Le Nôtre (Senior Consulting Manager) and Nicolas Taillet (Data Insight Manager, Adobe expert) and learn how to implement a marketing strategy to perfectly answer your consumer’s needs. More information on the official website.
  • eMetrics Summit, London

    Rob Fenton, fifty-five UK Managing Director and Mike Thornhill, ActivInstinct CEO, will share the story of ActivInstinct's efforts to improve revenue and margins with machine-learning to dynamically select content for customers. More information on the official website.
See event & press history


See event & press history

Follow fifty-five

Contact Us

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Tell us all

  • Site audience
    • < 250 000 Number of unique visitors / month
    • 250 000 - 500 000
    • 500 000 - 1M
    • 1M - 5M
    • 5M - 15M
    • > 15M
  • Industry sector
    • Banking, Insurance & Finance
    • Automotive
    • Cosmetics
    • Food
    • Luxury
    • Media, Local & Entertainment
    • Retail
    • Healthcare, Energy & Government
    • Technology
    • Travel
  • Web analytics solution used
    • Google Anaytics
    • Urchin
    • Omniture
    • Nedstat
    • Unica
    • Coremetrics
    • Weborama
    • AT Internet (XiTi)
    • Autre
    • Aucun
    • N/A
  • Enter "fifty-five" in figures:

Thank you for getting in touch with us. We will get back to you soon.