Context
The client, a major international banking group, initiated a program to strengthen compliance, automation, and observability of its critical system environments. These environments, based on Windows and Citrix platforms, require high levels of reliability, security, and operational control to ensure service continuity and compliance with regulatory requirements. To support this initiative, the client relies on Avaliance to modernize monitoring tools, improve infrastructure reliability, and industrialize operational practices.
Challenges
The client needed to ensure that its Windows and Citrix environments comply with internal and regulatory standards while improving the quality of service delivered to users.
The challenges also included optimizing automation processes, effectively leveraging performance indicators (KPIs), enhancing infrastructure observability, and reducing operational risks associated with manual interventions.

Achievements
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analysis and utilization of performance indicators for Windows and Citrix platforms
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modernization of monitoring and management tools for system environments
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integration of automation solutions to industrialize recurring operations
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continuous security and compliance reinforcement of Citrix infrastructures
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cross-functional coordination for incident and vulnerability management and industrialization of technical processes
Technologies & Tools
Results
Context
As part of a broader IT transformation and organizational restructuring, the client launched an initiative to improve the operational efficiency of its Digital Workplace scope. This involved managing day-to-day activities, overseeing service management providers both onshore and offshore, and monitoring ongoing projects in an environment requiring strong coordination, responsiveness, and service quality. To secure this transition and structure operational governance, the client relied on Avaliance to organize activities, optimize processes, and ensure overall performance.
Challenges
The client needed to strengthen the reliability of its Digital Workplace operations while improving coordination with service providers and internal teams.
Key challenges included structuring processes, improving prioritization, controlling operational flows, ensuring rigorous project management, and maintaining a high level of service quality for end users.

Achievements
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organization and management of Digital Workplace activities and operational workflows
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supervision of service management providers, including offshore teams (L1, L2, L3)
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project management with tracking of budgets, resources, risks, and timelines
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improvement of prioritization mechanisms and coordination of internal and external stakeholders
Core Focus Areas
Results
Context
The client initiated a major migration of its IT workstation environment to replace an outdated Windows ecosystem and secure its digital usage. This transition had significant impacts across the entire user ecosystem, including email, network, business applications, browsers, secure printing, and virtualized environments. To support this critical migration, the client relies on Avaliance to lead technical operations, ensure application compatibility, and guarantee service continuity.
Challenges
The client needed to successfully migrate to a modern Windows environment while minimizing operational risks.
Key challenges included ensuring compatibility of business applications and browsers, maintaining service continuity, securing access and printing systems, and improving virtualized environments and testing platforms required for application evolution.

Achievements
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full migration of the Windows environment to a more recent and secure version
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adaptation of associated infrastructures (email, network, browsers, proxy)
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analysis and validation of business application compatibility
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implementation of configuration policies (GPO) and browser optimization
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creation of virtualized environments for testing and secure access configuration
Technologies & Frameworks
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 leading industrial player, launched a workplace modernization initiative. This program aims to migrate workstations and servers to newer versions of Windows while ensuring service continuity and compatibility with business applications. To support this strategic transformation, the client relies on Avaliance to ensure technical leadership and overall coordination of the migration program.
Challenges
The client needed to ensure a seamless transition to new Windows environments without disrupting services for end users.
The challenges also included meeting project milestones, minimizing post-migration incidents, maintaining application compatibility, and strengthening coordination between technical teams and users in a Digital Workplace transformation context.

Achievements
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technical leadership of the Windows migration program for both workstations and servers
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coordination of technical teams involved in the migration
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validation and securing of business application compatibility with new Windows versions
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operational monitoring of deployments and proactive risk management
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user support to minimize the impact of change
Technologies & Frameworks
Results
Context
The client, a leading industrial player, launched a workplace modernization initiative aimed at migrating to newer versions of Windows. This strategic initiative is part of a broader IT modernization effort, while being constrained by strong requirements for service continuity and application compatibility. To support this critical transition, the client relies on Avaliance to ensure technical leadership, team coordination, and secure execution of the project.
Challenges
The client needed to ensure a smooth migration of workstations without service disruption for end users, while maintaining compatibility with existing business applications.
The challenges also included strict adherence to project timelines, minimizing post-migration incidents, and ensuring effective coordination between multiple technical stakeholders in a high-stakes digital transformation context.

Achievements
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definition and management of the Windows workstation migration plan
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coordination of technical teams involved in the project
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validation and securing of business application compatibility with new Windows versions
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operational monitoring of deployments and proactive risk management
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support for teams during the transition to minimize user impact
Technologies & Keywords
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