Case Study: Groupe BPCE achieves secure, scalable real-time logging and faster incident response with Elastic

A Secure and Scalable Multi-business Services Platform

BPCE Group — one of France’s largest banking groups — through BPCE-IT faced the challenge of industrializing and securing vast, previously underused volumes of infrastructure and application log data across multiple business lines and subsidiaries. The goals were to centralize logs for end-to-end transaction visibility, strengthen SOC/SIEM capabilities, improve incident response and performance analytics, and offer a scalable multi-tenant service to internal partners.

BPCE-IT implemented a standardized Elastic Stack platform (Elasticsearch, Kibana) with a Platinum subscription and ECE/ML proof-of-concepts to centralize ~22 million events/day and hundreds of clusters. The solution delivered cross-functional dashboards, automated alerting and ticketing integration, role-based data security, and proactive monitoring — improving detection and response times, enabling threat hunting, supporting predictive analytics, and reducing certain index storage requirements by up to 300×.

Groupe BPCE

Pascale Duchesne

Domain Manager in the Performance and Metrology Department