Case Study: John Lewis achieves real-time operational visibility and rapid online growth with Splunk Enterprise

Operational Intelligence Supporting Online Growth at John Lewis

John Lewis, part of the UK’s John Lewis Partnership and operator of the billion‑pound johnlewis.com site, needed better operational visibility across its multi‑site infrastructure to protect its reputation for service and avoid revenue loss. The IT team’s reliance on custom scripts and multiple monitoring tools limited proactive detection of anomalies, slowed mean time to resolution and risked poor customer experience during peak shopping events.

By deploying Splunk Enterprise (with forwarders, search heads and DB Connect) John Lewis gained real‑time operational intelligence through dashboards, alerts and advanced analytics. This enabled faster troubleshooting, proactive detection of drop‑offs and payment failures, informed capacity planning for peak days, smoother rollouts and measurable business impact—helping deliver record performance during Black Friday and a 23% increase in online holiday sales year over year.

John Lewis

Paul Coby

CIO, John Lewis