Another client for S3NS: the G7 company.
The latter outlines four types of services it intends to deploy on the PREMI3NS offering (qualified SecNumCloud):
- Chatbot for employees
- Voice agent on the embedded tablet of affiliated drivers
- Real-time activity supervision map for taxi operations
- AI-based analysis of customer feedback
Matmut, an “old” client that migrated to PREMI3NS
With such prospects, one can expect G7 to broaden the list of use cases that S3NS features on its website. Most notably, the only testimonials section still blank: “Innovating with controlled artificial intelligence.”
The other three sections each feature two linked clients:
- Club Med and Matmut for “Extract value from all your data, sensitive or not”
- Qonto and Thales for “Application modernization”
- b.connect and Posos for “Infrastructure modernization”
Matmut was one of the first to announce a deal with S3NS. It was in September 2023, on the “Local Controls” offering – now called CRYPT3NS.
Since then, the insurer has migrated to PREMI3NS. It has installed its data platform, moving its on-prem Spark-Hadoop base to a BigQuery environment.
Other insurers have signed with S3NS
Soon after Matmut, Birdz formalized a contract with S3NS. The “IoT subsidiary” of Veolia (which serves municipalities and public services managing water and the environment) indicated plans to use, among other tools, BigQuery, messaging buses, and managed containers.
In the wake of that, another insurer announced its choice of S3NS: AGPM. The military forces mutuality expected initial use cases on the CRYPT3NS architecture by the end of 2023.
MGEN also adopted Local Controls / CRYPT3NS in 2023. In May 2025, it took a step toward PREMI3NS by joining the Early Adopters program. Behind this lay the reform of the supplementary social protection for public agents, and the ambition to offer, in this framework, a model of a “mutual for the platform,” with white-label digital journeys and interoperability with other health players.
Almost in parallel, S3NS had mentioned the case of the BOPA Innovation Chair (Augmented Operating Room). AP-HP, the Institut Mines-Télécom and Université Paris-Saclay are its founders. Based at Paul-Brousse Hospital in Villejuif (Val-de-Marne), it focuses on hepatobiliary-pancreatic surgery. It was planned to host at S3NS the data gathered from projects such as surgical gesture analysis, operative simulation, and optimization of patient pathways.
The Macif communicates less openly about its ties with S3NS. Its CDO Fahmi Jendoubi did, however, speak at the latest Big Data & AI Paris trade show (September 2026). He touched on several use cases in broad terms, including e-mail processing (not yet finalized but in the testing phase) and document management (with a view to using Google’s VLMs “for the most complex cases”). All while planning to leverage the Gemini Enterprise suite, which was “arriving in the catalog.”
Qonto adopts S3NS in addition to AWS for its platform engineering
In December 2025, S3NS secured SecNumCloud qualification for PREMI3NS. The offering had gone GA a few weeks earlier. The early access program had therefore ended. “About thirty clients” participated. Among them, in addition to those already named, was Qonto.
Before joining S3NS, the neobank already had a SecNumCloud-qualified provider. But as it transitioned toward platform engineering, it realized the limitations. The biggest hurdle was the lack of managed services — starting with Kubernetes. The IaC that the SRE team had grown accustomed to in the AWS ecosystem was largely absent. It didn’t find the same intuitiveness, nor the same scalability overall.
Qonto did not abandon its stack on AWS (VPC, S3, EKS, Application Load Balancer, ECR, RDS, Cloudwatch). But it paired it with S3NS (VPC, Artifact Registry, GKE Autopilot, Cloud Load Balancing, Cloud Storage, Cloud SQL, Cloud Logging, Cloud Monitoring). The long-term goal: integrate specialized services over standard GCP, to support the transition of processes toward a flexible cross-cloud model.
A PoC on insurance data at a consultancy acquired by CGI
The consulting firm Apside — acquired by CGI in 2025 — also participated in the early access program. It developed a demonstrator for processing sensitive insurance data, from on-site collection to visualization.
Terraform was used to automatically deploy a landing zone. GKE Autopilot orchestrated the application workloads. Apside used Python scripts to generate data in a locally simulated environment, load it into GCS, then import it into BigQuery. It leveraged Kafka as the event bus and Prometheus/Grafana for monitoring. It also developed a Flask UI to visualize the data.
Clients that also sign with Bleu
At the commercial kickoff of its SecNumCloud offering*, S3NS claimed “more than 50 clients.” A number were also partners, such as SFEIR, which rolled out its RAISE AI platform for document management, generation of technical reports, and assistance in regulated environments.
In May 2026, as S3NS formalized its plans in Germany (open cloud region in preview, with launch expected by the end of 2026), the count had risen to “more than 70 clients.” Gojob (HR solutions provider and temporary staffing agency) had joined the list. Alongside Alice & Bob. And EDF, which selected S3NS — as well as Bleu — to store and process data in addition to its private cloud. Thales — S3NS’s parent company — also announced it would be the first to deploy SAP on PREMI3NS (RISE Private Cloud Edition). The German publisher also announced a partnership with Bleu.
* S3NS currently has 29 SecNumCloud-qualified services. Cloud Run, Secret Manager and Access Transparency (logging of S3NS personnel actions) are in the qualification process.
