Case Study: Citigroup achieves centralized, real-time infrastructure monitoring with Elastic

Using the Elastic Stack to Monitor CitiGroup’s Centralized Database

CitiGroup, a global bank operating in 100+ countries, faced fragmented, large-scale IT infrastructure and tooling challenges—scaling, resiliency, agility, and rising tooling costs—while senior management demanded clear oversight of tool utilization and business benefits. Data was scattered across tiers and regions, leaving IT teams unable to produce an end-to-end monitoring picture for management or to govern and standardize their monitoring stack.

CitiGroup implemented the Elastic Stack to ingest ~90 million metrics, events, and logs per day into a centralized Elasticsearch primary cluster (30-day active store) with automated snapshots to on‑prem object storage, plus index design, RBAC, APIs, Kibana dashboards, and alerting for container monitoring. The result was a searchable, governed data platform that delivers role-specific views for ops and app teams, real-time health and trend visibility, easier reporting for management, and consolidated support for audit, alerting, ticketing, and reduced tooling complexity and costs.

Citigroup