Business application migration: make the switchover a success in complete safety

An application migration involves transferring software, data and connections to a new platform, publisher or technical environment. It's a strategic step, because it enables business tools to be modernized, security to be improved, Cloud or SaaS solutions to be integrated, and the company to adapt to its new operational challenges. Without migration, an information system becomes obsolete and hampers competitiveness.

Big Bang migration is based on a complete changeover in a single operation: the old system is replaced by the new one overnight. It's fast, but requires rigorous preparation. Progressive migration, on the other hand, enables temporary cohabitation between the two solutions. Thanks to FlexFlow, IT Systèmes synchronizes data between the two environments for a smooth transition, without interruption and without double entry. This method is particularly well suited to multi-site structures or mission-critical projects.

Each migration is backed up before, during and after the changeover. Transfers are encrypted, access restricted and data verified by automatic control tools. In the event of an incident, a recovery plan is systematically in place. Our procedures meet the most demanding cybersecurity standards and are compatible with RGPD requirements.

The duration depends on the functional scope, the volume of data and the migration mode chosen. A Big Bang migration can be completed in a few days, while a progressive or multi-application project can take several weeks. The key is to plan the migration around business constraints, to avoid any operational disruption.

We analyze all application dependencies upstream, and integrate APIs or automations via FlexFlow to maintain communication between systems. This interoperability ensures that your business processes continue to function even during the transition.

Yes, it's one of our specialties. We work on customized environments to adapt them to current technologies. This includes code rewriting, database upgrades, containerization and integration of new API connectors.

Not necessarily. The Cloud offers advantages in terms of flexibility, cost and security, but some local environments remain more relevant, depending on data sensitivity or business constraints. IT Systèmes carries out a comparative audit to recommend the best solution: Cloud, hybrid or on-premise.

FlexFlow is a tool developed by IT Systèmes to automate and orchestrate exchanges between applications. During migration, it enables data to be synchronized in real time between the old and new systems. This automation avoids double data entry, reduces human error and accelerates the changeover phase.

The major risks are data loss, service interruptions, application incompatibility and poor user adoption. A poorly planned migration can have significant financial consequences. IT Systèmes eliminates these risks with a proven methodology, upstream testing and comprehensive post-deployment support.

We involve your key users right from the scoping phase. They take part in validating requirements, testing and final acceptance. This collaborative approach encourages adoption of the new tool and limits resistance to change.

IT Systèmes has established itself as a benchmark player in the application migration market. We have successfully carried out hundreds of migration projects, including for organizations handling very large volumes of data and critical environments (complete CRM, multi-entity ERP, accounting or collaborative platforms). Our teams have mastered both complex migrations and multi-tool interconnections, guaranteeing a smooth, secure transfer without any loss of information. Thanks to our proprietary FlexFlow tool, we ensure data synchronization and consistency even in the largest environments.