
Here is a detailed overview of the 8 French banks that use OpenStack, ranked from highest to lowest in terms of usage and skills developed, with the main specific use cases for each bank:
1. BNP Paribas: OpenStack is used to manage a robust cloud infrastructure to host critical banking applications, support development and test environments, and manage massive volumes of data. This facilitates scalability, high availability, and the integration of new technologies like artificial intelligence for data analytics.
2. Societe Generale: OpenStack enables Societe Generale to deploy digital financial services, automate IT processes and support agile development environments. This includes managing online services, trading applications, and private cloud solutions for better security and compliance.
3. Groupe Crédit Agricole: Crédit Agricole uses OpenStack to host online banking services, optimize data management for credit and investment applications, as well as ensure regulatory compliance with a flexible and scalable infrastructure.
4. Crédit Mutuel: OpenStack is used for server virtualization, IT resource management and the deployment of innovative banking applications. The bank uses this technology to improve operational efficiency and support digital transformation initiatives.
5. La Banque Postale: OpenStack supports La Banque Postale’s cloud infrastructure, in particular for mobile applications and online transaction management services. This solution also helps meet the growing needs for data storage and processing capacity.
6. HSBC: HSBC France uses OpenStack to host payment services, manage development and test environments, and manage financial risks. Cloud infrastructure allows for better integration and greater resilience of financial systems.
7. Caisse d’Epargne: OpenStack is used to manage critical banking applications, optimize IT operations, and support digital transformation initiatives. The Caisse d’Epargne relies on this technology to improve the flexibility and performance of online financial services.
8. Banque Populaire: Banque Populaire deploys OpenStack to manage computing resources and data associated with large-scale applications. This includes online banking support, server virtualization, and improved resource management.

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