About Groupe Diagonal'

Team spirit is the key to success

Microsoft Dynamics Gold Partner

Team spirit is the key to success

Groupe Diagonal' is first and foremost a business philosophy based on strong values we strive to share with our clients, team members and partners. Groupe Diagonal' was founded in 1993 and was one of the first ERP system integrators in France. Thanks to a pleasant work environment, our 48 dedicated team members contribute to making Groupe Diagonal' a successful company in our 3 agencies located in Lyon, Annecy and Aix-en-Provence. We work with 2 software editors: Microsoft, Sage. We have served over 500 customers and our revenue reached 6.8 million euros in 2013.

Our services

We offer a wide range of invaluable services along with our business solutions: it infrastructure, hotline and internet assistance, newsletters, customer club, 6 months check-up, BI, SharePoint and much more.

Our products

Microsoft Dynamics Nav

Microsoft Dynamics NAV is a complete ERP solution. It is easy to use and rapidly adaptable even for highly specialized industries. Financial, manufacturing, supply chain management, sales and marketing, project management, human resources, and services management information are stored in a centralized database allowing for greater productivity. Groupe Diagonal' is the 1 Dynamics NAV Partner in the Rhône-Alpes & PACA areas.

Microsoft Dynamics CRM

Microsoft Dynamics CRM is a complete system for customer relationship management. It enables you to create a holistic view of each customer from initial contact through post sales and services. It will power your business growth while strengthening your customer relationship.


Sage is a suite of business software designed to help you improve your organization, gain in productivity and anticipate future needs. Diagonal's certified know-how is based on our expertise combined with the quality and modularity of SAGE products. Groupe Diagonal' is one of the top 10 SAGE sellers in France.

Ours certifications

What does it take to be a Gold Certified Partner ? Groupe Diagonal' is an acknowledged Microsoft Gold Partner in three areas of expertise and is a certified small and medium enterprise specialist.

This represents 100 days of training a year. Gold Certified Partners represent the highest level of competence and expertise with Microsoft technologies and have the closest working relationship with Microsoft.

Microsoft Partner Gold / Silver

This certification ensures our technical and operational competence. Only few companies are Gold Certified partners for NAV.

Diagonal was also a selected member of the Microsoft President's Club in 2008, 2012, 2013 and reseller of the year in 2013.

President's Club

Sage Competence Center

What does it take to be an accredited SAGE competence center? Groupe Diagonal' is an accredited SAGE competence center. This accreditation guarantees quality and enables use to provide a direct hotline for our products. The accreditation requires our sales staff and consultants to undergo training and pass tests.

Our experience

Our Experience

For over 21 years, we have worked on a wide range of projects:

  • domestic and international,
  • multi-site,
  • multi-company,
  • multi-location
  • and multi-activity projects.

We have helped companies from various sectors including construction industry, volume retailing, services and manufacturing.

Our development

We aim to develop a strong, lasting and loyal relationship with our clients and our partners. We aspire to continue growing organically and by acquisition while paying great attention to our clients satisfaction.

Our Development

Our values

Our Values

We strive to always act in full transparency and to ensure a win-win relationship with our clients and partners. We consider profitability and sustainability to be synonyms. We believe it is important to dare taking risks in order to move forward and we never consider failure or success final.

Most importantly, we are convinced that team spirit is the key to success.