4,500 applications to migrate. A deeply modernized IT infrastructure. Non-negotiable requirements for security, sovereignty, and cost control.
This was the challenge faced by a government ministry when it called upon Sofrecom’s expertise to design and deploy its private cloud platform.
This project perfectly illustrates the complexity of cloud transformation in the public sector: it is not simply about selecting a technology, but about building a coherent, secure, and scalable architecture while ensuring the continuity of public services and preparing internal teams for autonomous and sustainable operations.
A ministry facing structural cloud transformation challenges
Modernizing IT infrastructure in the public sector involves specific constraints that are not always present in the private sector: data sovereignty requirements, strict regulatory frameworks, heterogeneous application landscapes, rigid budget cycles, and the need to ensure uninterrupted service delivery.
The ministry had to simultaneously address several critical challenges:
- Modernizing a legacy IT infrastructure to improve agility, scalability, and resilience
- Orchestrating the migration of 4,500 applications to a new cloud platform while ensuring service continuity
- Deploying a hybrid private cloud platform integrating IaaS (Infrastructure as a Service) and CaaS (Container as a Service)
- Ensuring interoperability between the new platform and existing systems for a smooth transition
- Identifying the most suitable vendors and solutions in terms of performance, security, and total cost of ownership
- Defining an operational roadmap for migration and ongoing infrastructure management
These challenges reflect a common reality in public administrations: cloud transformation cannot be improvised. It requires rigorous methodology, strong technical expertise, and structured change management.
Sofrecom’s methodology: from audit to knowledge transfer in 8 steps
Sofrecom’s cloud experts deployed a structured eight-step approach designed to minimize risks, optimize investments, and ensure long-term operational autonomy.
1. Infrastructure audit
Comprehensive analysis of the existing application landscape, network architecture, and information systems to identify dependencies and priorities.
2. Requirements definition
Formalization of technical, functional, and security requirements, including regulatory constraints such as data protection and cybersecurity.
3. Cloud market benchmarking
Comparative evaluation of leading cloud solutions based on performance, security, interoperability, and cost.
4. Vendor selection
Objective assessment of technical and commercial proposals to select the most suitable partners.
5. Prototype design (IaaS & CaaS)
Validation of use cases through prototypes to test compatibility and reduce migration risks.
6. Migration roadmap design
Definition of migration phases, prioritization of applications, and planning of key milestones.
7. Deployment and migration support
Operational support during platform deployment and progressive migration of applications while ensuring service continuity.
8. Training and knowledge transfer
Structured training programs to ensure full autonomy of internal teams in managing the cloud platform.
Results: a sovereign, scalable, and resilient cloud platform
Sofrecom’s support enabled the ministry to achieve a modern and operational cloud infrastructure with tangible benefits:
| Benefit | Concrete impact |
| Clear strategic vision | A comprehensive national master plan ready for presentation to decision-makers and financial partners |
| Operational foundations | Feasibility studies and tender dossiers enabling rapid project initiation |
| Strengthened governance | Recommendations for dedicated entities and project oversight frameworks |
| Skills development | Tailored training plans to enhance internal capacities |
| Inter-institutional coordination | An integrated approach fostering collaboration across ministries and agencies |
| Facilitated adoption | Communication and awareness strategies to promote acceptance of digital tools |
| Regulatory compliance | An adapted legal framework ensuring security, confidentiality, and compliance |
| User-centered services | More accessible, transparent, and efficient public services for citizens |
Beyond technical delivery, the project marked a strategic shift from a rigid infrastructure to an agile, scalable, and sovereign cloud environment supporting long-term public sector modernization.
Sofrecom, a trusted cloud transformation partner for the public sector
For over 50 years, Sofrecom has supported public organizations and telecom operators in their most complex digital transformations. Its cloud practice brings together experts in architecture, cybersecurity, migration strategy, and change management.
Are you leading a cloud transformation project for your administration or ministry? Our experts can help design a tailored approach from assessment to full operational transfer, discuss your project with us to explore your digital transformation needs
FAQ – Cloud transformation in the public sector
1. What is CaaS (Container as a Service) and why is it suitable for the public sector?
CaaS is a cloud model that enables organizations to deploy, manage, and orchestrate containerized applications (using technologies such as Kubernetes) without managing the underlying infrastructure. For the public sector, it provides an optimal balance between agility, portability, and control—especially in environments with strong data sovereignty requirements.
2. What is the difference between private cloud, public cloud, and sovereign cloud for government use?
A private cloud is dedicated to a single organization and can be hosted on-premises or by a provider. A sovereign cloud adds guarantees that data is stored and managed under national regulations, protected from foreign jurisdiction. Public administrations often favor private or sovereign cloud models due to security and compliance requirements.
3. How can large-scale application migration to the cloud be achieved without service disruption?
The key is a phased and prioritized migration approach: start with low-risk applications, validate target architectures using prototypes, and migrate in waves while maintaining parallel environments. Expert support ensures risk control and service continuity throughout the process.
4. What criteria should a ministry use to select a cloud solution?
Key criteria include regulatory compliance (GDPR, cybersecurity standards), security certifications, interoperability with existing systems, total cost of ownership, scalability, support quality, and data residency requirements.
5. How long does it take to deploy a private cloud platform in a public administration?
Timelines depend on application complexity and organizational constraints. A full program—including audit, benchmarking, prototyping, deployment, and training—typically takes 12 to 24 months for complete migration.
Sofrecom, part of the Orange group dedicated to consulting and expertise in telecommunications and digital transformation.
