Public (Azure, AWS, Google), private, hybrid or French sovereign clouds

Modernization can be applied to different environments: the public Cloud (Microsoft Azure, AWS, Google Cloud), which offers flexibility and advanced services; the private Cloud for dedicated, customized environments; and the hybrid Cloud, which combines the best of both worlds. Organizations can also opt for a French or European sovereign cloud, such as OVHcloud or Scaleway, to meet the challenges of sovereignty and regulatory compliance. The choice depends on data localization constraints, business objectives and expected security levels.

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Migration involves moving servers, applications and data to the Cloud without major transformation, enabling a rapid transition but limited benefits. Modernization, on the other hand, involves redesigning architectures and sometimes application code to take advantage of native Cloud services such as containers, serverless, managed bases or microservices. This approach improves performance, security and resilience, while reducing technical debt. It also helps to control costs through dynamic resource sizing.

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A well-managed Cloud modernization can significantly reduce IT expenditure by eliminating over-provisioning, adopting pay-as-you-go billing models and automating resource management. On average, companies see savings of 20-40% on their infrastructure costs, while gaining in operational agility. In addition to direct savings, modernization also reduces costs associated with downtime, maintenance of legacy environments and technical debt management, delivering a rapid and sustainable return on investment.

A cloud migration or modernization project entails a number of risks if the process is not properly prepared. The first concerns the availability of services: without an appropriate failover plan or disaster recovery plan, an interruption could have an impact on users. The second relates to data security, particularly data protection and localization, which must comply with regulations (RGPD, ISO 27001, NIS2). Finally, there is a financial risk if consumption is not kept under control. IT Systèmes anticipates these risks by integrating security right from the design stage, deploying controlled migration tests and implementing FinOps budget governance.

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Cloud modernization isn't just for large accounts. SMBs and SMEs have every interest in modernizing their infrastructure to benefit from greater agility, improved security and lower operating costs. For these structures, the Cloud also makes it possible to free themselves from heavy investment in hardware, and take advantage of solutions hitherto reserved for large organizations, such as high-availability environments, advanced collaborative solutions and artificial intelligence. IT Systèmes' approach is progressive and tailored to the size of each organization, ensuring a secure project while maximizing the value generated.

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The success of a Cloud modernization also depends on its adoption by in-house teams. IT Systèmes offers comprehensive support including hands-on training, security awareness sessions, skills transfer to internal administrators and documentation of new processes. We also implement DevOps practices and collaborative tools to facilitate the day-to-day operation of modernized environments. This approach ensures a smooth transition, rapid skills upgrades and greater team autonomy over the long term.

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