Thales S3NS Google Summit 2026: the trusted Cloud shifts to scale

PREMI3NS: a SecNumCloud 3.2-qualified trusted cloud that goes far beyond cloud

Since December 17th 2025, S3NS – a Thales subsidiary in partnership with Google Cloud – has been officially awarded the SecNumCloud 3.2 qualification by ANSSI (France’s National Cybersecurity Agency) for its PREMI3NS offering. This is a first on several counts: S3NS is the only market player to have obtained this qualification covering the IaaS, CaaS and PaaS layers simultaneously in a single ANSSI decision.

But the ambition does not stop at cloud. At the S3NS Summit 2026, the roadmap was unveiled: 15 new services are arriving in H1 2026, expanding a catalogue that already includes around thirty services.

In the second half of the year, Vertex AI – Google Cloud’s artificial intelligence platform – will join the PREMI3NS offering, opening the door to trusted AI and sovereign AI agents.

The stated objective: double the service catalogue in 2026. Cloud, Data, AI, cybersecurity (including the Security Command Center) – PREMI3NS is positioning itself as the most comprehensive platform in the SecNumCloud-qualified market.

Two complementary offerings: PREMI3NS and CRYPT3NS, a dual-speed strategy

S3NS structures its portfolio around two distinct offerings addressing different levels of requirements.

PREMI3NS – The “ultra-sovereign” SecNumCloud 3.2-qualified offering

• Full immunity from extraterritorial laws (Cloud Act, FISA)
• Operations and administration performed exclusively by S3NS employees, in France
• Quarantine zone to analyse and validate Google updates before deployment
• Data hosted in 3 interconnected data centres in the Paris region (10,000+ devices, including Nvidia H100 GPUs)
• Fully controlled by Thales, subject to French and European law

CRYPT3NS – The secured cloud offering, non-SecNumCloud

• Externalised encryption with customer-controlled keys
• Addresses sovereignty and regional compliance needs without the SecNumCloud requirement
• Designed for less regulated use cases and international markets
• Continues to evolve with new services

This dual-tier strategy enables S3NS to serve both organisations subject to the strictest regulations (critical infrastructure operators, government agencies, defence sector) and enterprises seeking a trust framework without requiring full SecNumCloud qualification, in France and across Europe. S3NS also offers GCP to mix and match sovereign and public cloud workloads under one contractual agreement.

France and Europe ambitions: Thales and Google Cloud aim for scale

The Thales–Google Cloud partnership has clear ambitions for market coverage.

In France

• The SecNumCloud-qualified cloud market, still modest (Yearly 18M € estimates by CyberTaskForce) is expected to grow significantly with the government’s “Cloud au centre” (Cloud-first) policy and the accelerating migration of sensitive data
• S3NS aims to become a catalyst for the French digital ecosystem, with a growing number of French Tech players adopting PREMI3NS
• Integration partnerships already signed with Devoteam, Sfeir, Sopra Steria, Deloitte, Onepoint, Atos, Crayon, Theodo and Accenture
• Third-party software vendors on the PREMI3NS trajectory: GitLab, Mistral AI, Elastic, CraftAI, Red Hat, Cloudera, Confluent…

In Europe

• S3NS reports growing interest from companies outside France
• The evolving stance of EU member states on security over the past 18 months appears favourable
• The SecNumCloud 3.2 framework served as the basis for the High+ level of the European EUCS certification scheme
• Google Cloud has signed similar partnerships for “national” offerings in other European countries, notably in Spain

The message is clear: SecNumCloud qualification is not an end in itself, but a springboard for European ambition.

S3NS in the french competitive landscape: what sets it apart?

The SecNumCloud market in France currently includes several qualified providers (OVHcloud, Outscale, Cloud Temple, Worldline, Orange Business, Cegedim, Oodrive for SaaS), now joined by S3NS, while others are in the qualification process (Bleu/Orange-Capgemini, NumSpot, among others).

Key differentiators of S3NS

• Unmatched functional coverage: the only SecNumCloud-qualified player covering IaaS + CaaS + PaaS simultaneously, with the functional richness of a hyperscaler (Google Cloud)
• Sovereign AI roadmap: Vertex AI in H2 2026, AI agents, multiple language models – a unique positioning in trusted AI
• Proven isolation architecture: 100% French operations, update quarantine zone, extraterritorial immunity validated by ANSSI following in-depth risk assessment
• Exceptional conversion rate: approximately 90% early adopter conversion rate according to Cyprien Falque, CEO of S3NS
• Dual offering (PREMI3NS + CRYPT3NS): ability to address the full spectrum of needs, from the most regulated to the most open

Customer base

S3NS reported over 70 cumulative customers (PREMI3NS + CRYPT3NS) as of Feb.2026, including around thirty on PREMI3NS. «  usual suspects «  such as French Government and Healthcare are present, but also some banks. Most of the existing clients are multi vendors, so non-exclusive to S3NS.

Among reference customers: MGEN, Matmut, AGPM (insurance), Qonto, BConnect (finance), EDF, Birdz/Veolia (energy/environment), Club Med (tourism), Pigment (tech), and Thales itself (which migrated 70% of its cloud operations to the platform).

Key point: these customers are multi-sourced. EDF, for example, has also selected Bleu (Orange-Capgemini/Microsoft). This multi-cloud reality confirms that the market is not a zero-sum game: organisations diversify their trusted providers based on their use cases. Transfer from public  cloud and exit of full on-premise mode are the vehicles to migration.

Conclusion

The S3NS Summit 2026 marks a turning point. While 2025 was very focused on France and SecNumCloud considerations, the 2026 edition demonstrates maturity and forward thinking. With SecNumCloud 3.2 qualification secured in December 2025, a rapidly expanding service catalogue, and sovereign AI on the horizon, S3NS now has the credentials to scale. The “sovereignty vs functional richness” debate seems outdated: PREMI3NS demonstrates that it is possible to reconcile both and to consider beyond-Infrastructure solutions by adding Trusted IA options to the portfolio.