Context
The client delivers large-scale network programs requiring rigorous coordination of technical stakeholders, vendors, and internal teams. These projects include the modernization of critical infrastructures, replacement of core network equipment, and redesign of LAN and Wi-Fi architectures across hundreds of sites per organization. To secure pre-sales phases, structure project governance, and ensure successful large-scale execution, the client relies on Avaliance to define requirements, manage programs, and oversee delivery.
Challenges
The client needed to manage multiple complex network projects simultaneously while meeting strict constraints in terms of timelines, quality, and profitability.
Key challenges included structuring pre-sales phases, planning multi-site deployments, managing the replacement of critical equipment, coordinating technical stakeholders, and controlling operational risks.

Achievements
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scoping client requirements and estimating services during pre-sales phases
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defining project governance and comprehensive multi-site deployment plans
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end-to-end management of projects from initiation to go-live across hundreds of sites
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budget tracking, margin management, and operational risk control
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coordination of technical teams and supervision of core network equipment replacement
Technologies & Domains
Results
Context
The client delivers large-scale real estate projects requiring the integration of reliable, secure, and standards-compliant IT infrastructures. These projects include the setup of technical facilities, deployment of full network architectures, and coordination of multiple stakeholders under tight timelines. To ensure technical consistency, secure major relocation operations, and structure project governance, the client relies on Avaliance to define IT requirements, manage deployments, and coordinate all stakeholders through to go-live.
Challenges
The client needed to successfully deliver critical real estate projects while ensuring IT infrastructure compliance, service continuity during transitions, and adherence to tight deadlines.
Key challenges included accurately defining technical requirements, coordinating multiple stakeholders, managing several parallel projects, establishing effective governance, and securing complex operations such as large-scale relocations.

Achievements
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definition of technical requirements, specifications, and design of LAN, MAN, WAN, and Wi-Fi architectures
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budget management, planning, and governance (project and steering committees)
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coordination of vendors, operators, and system integrators and operational monitoring of deployments
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change management support and communication with operational teams during major transitions
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management of complex multi-site relocations and technical validation of deliverables
Technologies & Domains
Results
Context
The client, a major railway transportation operator, deploys critical technical infrastructures across numerous operational sites. These projects cover a wide range of environments, including networks, telephony, Wi-Fi, control stations, and communication systems, all requiring high levels of availability, compliance, and service continuity. To secure these deployments and structure multi-site project management, the client relies on Avaliance to define requirements, coordinate stakeholders, and manage operations through to go-live.
Challenges
The client needed to ensure reliable deployment of critical technical infrastructures while controlling timelines, costs, and risks.
Key challenges included coordinating internal and external stakeholders, ensuring compliance of on-site installations, maintaining service continuity during infrastructure changes, optimizing project management processes, and managing multiple simultaneous multi-site deployments.

Achievements
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definition of technical and resource requirements and validation of deployment solutions
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management of tenders, cost estimation, and comprehensive project planning
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coordination of technical teams, vendors, and telecom operators throughout the lifecycle
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operational monitoring of multi-site deployments through to go-live (Wi-Fi, networks, telephony)
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optimization of project management processes and securing of critical operations
Infrastructure & Domains
Results
Context
The client deploys network infrastructures for professional organizations requiring reliable, secure, and high-performance environments. Projects cover a wide range of scopes, including LAN architecture redesign, Wi-Fi network design, controller cluster implementation, and large-scale deployment of routers at a national level. To manage these complex technical initiatives and coordinate multiple stakeholders, the client relies on Avaliance to ensure end-to-end delivery of network projects, from scoping to implementation.
Challenges
The client needed to ensure reliable and well-planned network deployments while meeting contractual commitments in terms of quality, timelines, and costs.
Key challenges also included coordinating technical teams and subcontractors, managing operational risks, and ensuring efficient project delivery in multi-site and multi-stakeholder environments.

Achievements
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full lifecycle management of LAN, Wi-Fi, and WAN projects, from scoping to delivery
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contribution to pre-sales phases and technical cost estimation
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operational planning and coordination of engineers, technicians, and subcontractors
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monitoring of risks, costs, and overall project performance
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execution of multi-site network deployments including LAN, Wi-Fi, and WAN equipment
Technologies & Domains
Results
Context
The client, a major public transportation operator, launched a large-scale modernization of its IT infrastructures across multiple regions and Data Centers. This initiative, led within the infrastructure department, covers a broad scope including infrastructure project management, network and system expertise, regional support, and the maintenance and evolution of critical environments. To support this transformation, the client relies on Avaliance to secure, harmonize, and industrialize its infrastructures while ensuring service continuity.
Challenges
The client needed to modernize and secure its network and system environments while maintaining a high level of availability.
Key challenges included the industrialization and centralization of backup systems, the successful execution of complex migrations (data, software, workstations, and services), the harmonization of architectures across regions and Data Centers, and compliance with service continuity and infrastructure requirements.

Achievements
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management and contribution to infrastructure projects, including data and environment migrations
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harmonization and security enhancement of network, system, and virtualized infrastructures across regions and Data Centers
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centralization and reliability improvement of regional backups into Data Centers
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integration and operation of virtualization, storage, and backup technical platforms
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production of technical documentation and knowledge transfer to support teams
Technologies & Domains
Results
Context
The client, a key player in critical services, must ensure the stability, performance, and availability of its technical platforms. These infrastructures rely on IBM AIX environments and IBM TSM backup systems, which are essential for business continuity. To secure operations, support hardware upgrades, and enhance the reliability of these environments, the client relies on Avaliance to optimize and maintain its system and backup infrastructures.
Challenges
The client needed to ensure the availability and reliability of IBM TSM backup systems while maintaining service continuity during sensitive hardware migration operations on IBM Power environments.
The challenges also included optimizing the performance of AIX systems and multi-vendor storage infrastructures, reducing technical incidents, and improving overall service quality in critical environments.

Achievements
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administration and monitoring of IBM TSM backup environments (installation, configuration, incident management)
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administration of IBM AIX systems, including support for hardware migrations (Power8 to Power10), tuning, and troubleshooting
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management and optimization of multi-vendor storage environments (IBM DS8000, Storwize, Dell, Hitachi)
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contribution to the continuous improvement of existing infrastructures and operational continuity support
Technologies & Infrastructure
Results
Context
The client, a major international banking group, operates a very large Windows server estate requiring high levels of industrialization, security, and monitoring. To meet these requirements, the client launched an initiative to automate operational processes, strengthen compliance, and improve security management across more than 20,000 Windows servers. In this context, the client relies on Avaliance to design automation and monitoring solutions based on modern technologies, combining Python, Flask, MongoDB, and Kibana.
Challenges
The client needed to industrialize the management of its Windows infrastructure while ensuring high levels of compliance and security.
Key challenges included automating system operations at scale, ensuring server compliance (antivirus, monitoring, restart policies), monitoring and securing a critical server estate, and industrializing the tracking and deployment of critical Microsoft patches.

Achievements
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design and optimization of APIs for Windows infrastructure management to automate operations (OS installation, start/stop)
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development of automation solutions based on Python and Flask
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implementation of compliance monitoring mechanisms for Windows infrastructures (antivirus, restart policies)
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centralization and visualization of operational data through MongoDB and Kibana
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industrialization of tracking and deployment of critical Microsoft patches across the server estate
Technologies & Tools
Results
Context
The client, a large international banking group, initiated the modernization of its storage infrastructure to address performance, scalability, and governance challenges. As part of this initiative, the client launched the implementation of an object storage solution based on Scality technology, with the objective of providing an S3 service accessible via API to the group’s various entities. To support this strategic initiative, the client relies on Avaliance to design, deploy, and operate an object storage platform aligned with group standards.
Challenges
The client needed a scalable, secure, and highly available object storage platform capable of integrating seamlessly with internal applications.
The challenges also included structuring a storage offering delivered as a service, industrialized, compliant with internal standards, and easily usable by consuming teams, while ensuring a high level of automation and reliability.

Achievements
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design and deployment of an object storage platform based on S3-compatible technology
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provision of an API-accessible object storage service for all group entities
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automation and securing of operational and administrative processes
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ensuring operational stability and maintenance of the object storage infrastructure
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alignment of the solution with internal technical, security, and governance standards