Case Study: Euronext achieves millisecond latency, million-message scalability and 24/5 reliability with Confluent Platform

Pan-European Stock Exchange Relies on Confluent to Power Event Driven Trading Platform

Euronext, the first pan‑European stock exchange operating markets across Belgium, France, Ireland, the Netherlands, Portugal and the UK, faced the challenge of building Optiq®, a new event‑driven trading platform with extreme throughput and low‑latency requirements. To meet requirements for ingesting up to a million orders per second, millisecond (and in some cases microsecond) round‑trip latencies, and enterprise‑grade support, Euronext chose Confluent and the Confluent Platform as the persistence layer for its mission‑critical system.

Confluent implemented a Kafka‑based streaming persistence layer, validated by a proof‑of‑concept that achieved 1M messages/sec and then rolled into production to replace the market data gateway and support matching engines, gateways, replication and compliance pipelines. With Confluent’s engineering support and tuning, Euronext now runs Optiq on Confluent Platform across all cash markets—achieving a tenfold capacity increase, sustained multimillion‑message throughput, millisecond (and sub‑millisecond in paths) latencies, billions of messages per day and reliable 24/5 operations with no major incidents.

Euronext

Alain Courbebaisse

Chief Information Officer