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- Alibaba uses a Flink-based system to optimize search rankings in realtime
- Amadeus
- ATOS
- Bol.com (Online Retailer) uses Flink for real time monitoring/measuring in the customer personalization pipeline
- Bouygues Telecom uses Flink for real-time event processing and analytics over billions of Kafka messages per day.
- Capital One uses Flink for real-time customer activity monitoring
- data Artisans was created by the original developers of Flink
- Eura Nova
- Ericsson used Flink to build a real-time anomaly detector over large infrastructures using machine learning
- Firelayers
- IMR Internet Memory Research is using Apache Flink in the EU H2020 project STREAMLINE
- KEEDIO uses Apache Flink's CEP library in a log aggregation solution for Red Hat OpenStack to discover operational anomalies that otherwise would be very hard to spot.
- king.com (Mobile Gaming like CandyCrush Saga) uses Apache Flink for real time data science dashboards
- LINE uses Apache Flink for real-time log aggregation and system monitoring.
- mbr targeting (realtime advertising) is using Flink for real-time processing and streaming ingestion to Druid
- NMusic is using Apache Flink to supply real time music recommendations to its users
- Okkam SRL uses Flink for semantic big data analysis and inference for tax assessment and more.
- Otto Group (Online Retailer)
- Portugal Telecom is currently experimenting Apache Flink for IPTV real-time recommendation in very high demanding scenarios
- Pragsis Bidoop is using Apache Flink in his cybersecurity and big data product called AnalyticMate.
- Radicalbit is an OSS distribution that uses Flink for Fast Data processing
ResearchGate (Social Network for Scientists) is using Flink in the areas of network analysis and near duplicate detection.
- Thirdwatch is using Apache Flink for real-time financial fraud detection.
- Treelogic is using Apache Flink in the EU research project Proteus
- Zalando (Online Fashion Retailer) uses Flink for real-time business process monitoring and continuous ETL
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