CELESTE

What CELESTE does

CELESTE is a French B2B operator providing integrated telecommunications, cloud hosting, and cybersecurity services to enterprise and mid-market customers. Founded in 2001 and headquartered in Champs-sur-Marne, the company owns and operates a 13,000 km proprietary fiber optic network spanning France and Switzerland, four Tier 3/4-certified data centers, and 15 regional agencies (10 France, 5 Switzerland), serving a base of more than 20,000 business customers including Total, Veolia, Somfy, VYV, AXENS Solutions, and UEFA Euro 2024. The company is led by founder and President Nicolas Aubé.

The service portfolio spans dedicated fiber connectivity, MPLS/SD-WAN/VPN, private/hybrid/public cloud, colocation, telephony, UTM firewall, Anti-DDoS, penetration testing, vulnerability scanning, and the Modulo Box modular edge data center. CELESTE monetizes through recurring subscription contracts — primarily multi-year managed-service and infrastructure agreements — with revenue split across three lines: telecom/connectivity, cloud/hosting, and cybersecurity. The company holds ISO 27001, HDS, ISO 26000 (AFNOR), and EU Code of Conduct for Data Centres certifications, is SBTi-validated, and joined Hexatrust in 2026.

Growth has been materially M&A-driven: VTX Telecom (2021) added a Swiss footprint, Oceanet-Technology (2021) deepened managed-cybersecurity capability, and Magic Online (2024) added approximately 20,000 business customers. A €260 million bank-financing package closed in June 2021 with BNP Paribas, BRED Banque Populaire, Caisse d'Epargne, Crédit du Nord, LCL, and Société Générale supports continued organic and inorganic scaling. Strategic vendor partnerships with Fortinet, Netscout, SonicWall, VMware, Microsoft Azure, and AWS underpin the integrated stack.

Name

CELESTE

Legal name

CELESTE

Website

https://celeste.fr

Company type

Private

Founded year

2001

Operating status

Operating

Headcount range

1–10 employees

Short description

CELESTE is a French B2B telecom, cloud, and cybersecurity operator serving 20,000+ business customers across France and Switzerland via its proprietary 13,000 km fiber network, four data centers, and 15 regional agencies.

Ownership category

akta.pro rank

Product category

Business Telecommunications and Cloud Services

NAICS

Wired and Wireless Telecommunications Carriers (except Satellite) (51711), Wired Telecommunications Carriers (517111), Wired and Wireless Telecommunications (except Satellite) (5171)

SIC

Communications Services, Nec (4899), Telephone Communications (No Radiotelephone) (4813), Computer Communications Equipment (3576)

akta.pro primary industry

Carrier Ethernet & Wavelength Wholesale (E-Line/E-LAN, OTN, lambda) (HDAIAEAB)

akta.pro secondary industries

Service Provider Core Routing (P/Backbone/MPLS) (HDAFABAD), Managed SD‑WAN/SASE Connectivity (Enterprise WAN under Managed Connectivity) (HDAIAGAF), Data Center Networking Services (Switching/Routing/Fabric) (BPAEAEAF), Network Security Services (Firewall/VPN/ZTNA/SASE Integration) (BPAEAEAG), Edge Networking & SD-WAN Integration (SASE/SD-WAN Edge On-ramps) (HDABAGAJ)

Keywords

• Fiber optic services
• Enterprise cloud hosting
• Managed cybersecurity services
• Data center colocation
• Business telecom operator

Headquarters

HQ city

Champs-sur-marne

HQ country

France

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Telecom/Connectivity Services: Recurring subscription-based revenue from fiber optic connectivity, network services, and telecom solutions for businesses
2. Cloud and Hosting Services: Revenue from data center hosting, cloud infrastructure, and managed services with recurring subscription billing
3. Cybersecurity Services: Managed security services including anti-spam, firewall, and threat protection sold as recurring subscriptions

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels5 records

Core offering

CELESTE is a B2B telecom, cloud and cybersecurity operator that sells dedicated fiber optic connectivity, multi-model cloud services, colocation, managed network security, and IP telephony to businesses across France and Switzerland. The company runs its own 13,000 km fiber network and four ISO 27001- and HDS-certified sovereign data centers, enabling bundled connectivity-plus-cloud-plus-security offerings with data residency guarantees. Its portfolio spans dedicated fiber, MPLS/SD-WAN, private/hybrid/public cloud, colocation, the Modulo Box modular datacenter, UTM firewall, Anti-DDoS, penetration testing, and SIP/Teams telephony.

Product overview

CELESTE is a French telecom operator, cloud, and cybersecurity provider for businesses with its own fiber network (13,000 km) and 4 ISO 27001-certified datacenters. The platform offers integrated telecom services (dedicated fiber, 4G/5G, backup links), network security (VPN/MPLS, SD-WAN, UTM Firewall, Anti-DDoS), hosted IT services (private/hybrid/public cloud, colocation, disaster recovery), and cybersecurity (penetration testing, vulnerability scanning, DevSecOps). The Modulo Box product is a modular, portable datacenter deployable on customer sites in weeks. Key offerings include Fibre Optique Dédiée for dedicated internet access, Cloud Privé/Hybride/Public for various cloud deployment models, Réseaux VPN MPLS and SD-WAN for multi-site connectivity, UTM Firewall and Anti-DDoS for security, Cloud PRA/PCA for business continuity, Test d'Intrusion and Scan de Vulnérabilités for security assessment, Téléphonie Cloud, Trunk SIP, and Téléphonie Teams for communications, Colocation Datacenter for housing, and the Modulo Box for modular infrastructure.

Differentiator

Problem solved

Functional benefit

Products and services

• Fibre Optique Dédiée Dedicated fiber optic internet access with guaranteed bandwidth and 99.9% SLA, with an optional 4G backup and an Express delivery option enabling deployment in under 10 business days. Sold to enterprises and public-sector customers that need guaranteed throughput and rapid installation.
• Cloud Privé Dedicated private cloud infrastructure hosted in CELESTE's ISO 27001- and HDS-certified French datacenters, providing complete data isolation and sovereignty for regulated and security-sensitive workloads.
• Cloud Hybride Hybrid cloud solution combining CELESTE's private infrastructure with Microsoft Azure and AWS public clouds, enabling flexible workload distribution and cloudbursting for enterprises.
• Cloud Public Public cloud services integrated with major hyperscaler providers, sold with CELESTE managed services and support so enterprises can adopt public-cloud capacity while keeping a single accountable operator.
• Réseaux VPN MPLS Private VPN and MPLS network solutions for secure multi-site interconnection, connecting distributed enterprise locations with dedicated, encrypted connectivity.
• Réseaux SD-WAN Software-defined WAN solution providing intelligent traffic routing across multiple connections, dynamic path selection and centralized network management for multi-site enterprises.
• UTM Firewall et Routeurs Sécurisés Unified Threat Management firewalls and secure routers providing integrated firewalling, intrusion prevention, and content filtering for enterprise networks.
• Anti-DDoS Distributed denial-of-service protection powered by Netscout, delivering real-time threat detection and mitigation to safeguard enterprise infrastructure.
• Cloud PRA / PCA Business Continuity and Disaster Recovery (BC/DR) cloud solution enabling data replication between CELESTE datacenters with reduced Recovery Time Objective for rapid service restoration.
• Test d'Intrusion (Pentest) Penetration testing service that identifies and evaluates security vulnerabilities in enterprise systems and networks, performed by CELESTE security professionals.
• Scan de Vulnérabilités Automated vulnerability scanning service that continuously assesses and identifies security weaknesses across enterprise IT infrastructure.
• Téléphonie Cloud (Centrex IP) Cloud-hosted IP telephony (Centrex) providing enterprise-grade voice services with features such as auto-attendant, call routing and unified communications.
• Trunk SIP SIP trunking service that connects existing enterprise PBX systems to the PSTN over IP, delivering scalable voice connectivity with cost savings.
• Téléphonie Teams Microsoft Teams-integrated telephony solution enabling direct calling capabilities within the Teams interface, combining unified communications and enterprise telephony.
• Colocation Datacenter Datacenter colocation service providing dedicated server racks in CELESTE's certified facilities (ISO 27001, HDS) with a 4-hour guaranteed time to repair and 99.99% availability SLA.
• Modulo Box (Datacenter Modulaire) Compact modular datacenter deployable on customer premises in weeks. Available in three formats (6i, 8i, 12i) accommodating 3-36 server racks, with PUE below 1.2, ISO 27001 and HDS certifications, and 100% renewable energy power.
• Compte Internet Sécurisé All-in-one secure internet account bundling internet connectivity, cybersecurity, cloud and telephony into a single integrated offering for small and medium enterprises.

Quantifiable outcome

• 99.99% uptime SLA achievable for enterprise customers
• +1 more outcomes

Named customers7 records

Segments8 records

Ideal customer profiles6 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

Feature3 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• FortinetcoreTechnology or IntegrationTechnology partnership integrating Fortinet cybersecurity solutions (firewall, threat protection) into CELESTE's managed security offerings. Visible as partner logo on website indicating active integration and resale relationship.
• NetscoutcoreTechnology or IntegrationTechnology integration partner for network performance monitoring and security analytics solutions. Netscout technology enhances CELESTE's network visibility and threat detection capabilities.
• Microsoft AzurecoreTechnology or IntegrationCloud partnership providing Azure integration and cloud migration services. CELESTE offers Azure-based solutions as part of its hybrid cloud portfolio.
• VMwarecoreTechnology or IntegrationTechnology partner with VMware Zero Carbon Committed certification. CELESTE leverages VMware virtualization and cloud infrastructure technologies for its data center services.
• AWS (Amazon Web Services)coreTechnology or IntegrationCloud partnership enabling AWS integration and co-sell relationships. CELESTE provides connectivity and migration services for AWS workloads.
• SonicwallcoreTechnology or IntegrationCybersecurity technology partner for firewall and network security solutions. Sonicwall products are integrated into CELESTE's managed security service offerings.
• HexatrustcoreGTM or Marketing PartnerCELESTE is a member of Hexatrust, a French cybersecurity association bringing together trusted vendors for government and enterprise customers. Provides access to public sector procurement frameworks.
• GSMA Foundry/ESAminorStrategic or Co-development PartnerParticipation in GSMA Foundry/ESA initiative for NTN (Non-Terrestrial Network) and 6G showcase, demonstrating involvement in next-generation network technology development.
• RIPE NCCminorOthersRIPE NCC member for IP address allocation and internet registry services, required for operating network infrastructure and autonomous system numbers.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Adista: Adista is a French B2B operator offering fiber, cloud hosting, managed networks, and cybersecurity to PME/ETI/grand compte — the closest 1:1 analog to CELESTE's full-stack model, including its own infrastructure and HDS/ISO certifications.
• Hub One: Hub One is a French B2B telecom, cloud, and cybersecurity operator (Aéroports de Lyon subsidiary) serving enterprise and public-sector customers with similar MPLS/SD-WAN, cloud, and managed security offerings.
• Waycom: Waycom is a French B2B telecom and cloud integrator focused on mid-market enterprises, offering dedicated fiber, SD-WAN, and cloud services comparable to CELESTE's PME/ETI positioning.
• Colt Technology Services: Colt is a European B2B fiber operator with owned pan-European network and enterprise cloud connectivity services, competing head-to-head with CELESTE on dedicated wavelengths, Ethernet, and SD-WAN in France and Switzerland.
• Eurofiber: Eurofiber owns and operates an open digital infrastructure (fiber and datacenters) across the Netherlands, Belgium, Germany, and France, providing wholesale and enterprise connectivity services that overlap directly with CELESTE's owned-fiber business model.

Broad incumbents

• Orange Business Services: Orange Business is the enterprise arm of Orange, offering a much broader portfolio of connectivity, cloud, IoT, and cybersecurity across global markets. It is the dominant incumbent competitor to CELESTE in the French grand compte segment.
• Bouygues Telecom Entreprises: Bouygues Telecom's enterprise division provides fiber, mobile, cloud, and cybersecurity to French businesses of all sizes, competing with CELESTE on dedicated fiber and bundled offers while leveraging much greater scale and brand recognition.
• Swisscom: Swisscom is the incumbent Swiss telecom operator providing enterprise connectivity, cloud, and security services across Switzerland — directly competing with CELESTE.CH in the Swiss mid-market and enterprise segments.
• SFR Business (Altice): SFR Business, part of Altice France, offers fixed, mobile, cloud, and security services to French enterprises and competes with CELESTE across the SME and mid-market segments.

Emerging players

• NBS System: NBS System is CELESTE's wholly-owned cybersecurity subsidiary, but prior to the acquisition it operated as a standalone French MSSP specializing in managed security, pentesting, and SOC services — comparable to CELESTE's cybersecurity arm and useful as a peer benchmark for the security P&L.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/societeceleste
• YouTubeyoutube.com/channel/UCe2iK-gVwKB7H6AtVbJUdQw
• LinkedInlinkedin.com/company/celeste

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries5 records

Funding overview

Funding rounds2 records

Investors7 records

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

M&A2 records

Investments1 record

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

Frequently asked questions about CELESTE