Euronext Optiq Market Data Gateway (MDG)
Low-latency real-time market data feed for Euronext cash and derivatives markets delivered as UDP multicast messages in Simple Binary Encoding (SBE) with LZ4-compressed snapshots, plus an MDG Lite variant and cloud delivery. Not an HTTP API - interface specifications are published as public PDFs on Euronext Connect and access requires a market data agreement and connectivity provisioning.