1. Apache Airflow. https://airflow.apache.org. [Online; accessed 25/05/2020]. Apache Airflow. https://airflow.apache.org. [Online; accessed 25/05/2020].
2. Build a Concurrent Data Orchestration Pipeline Using Amazon EMR and Apache Livy. https://aws.amazon.com/blogs/big-data/build-a-concurrent-data-orchestration-pipeline-using-amazon-emr-and-apache-livy/. [Online; accessed 25/05/2020]. Build a Concurrent Data Orchestration Pipeline Using Amazon EMR and Apache Livy. https://aws.amazon.com/blogs/big-data/build-a-concurrent-data-orchestration-pipeline-using-amazon-emr-and-apache-livy/. [Online; accessed 25/05/2020].
3. Flink Use cases. https://flink.apache.org/usecases.html. [Online; accessed 01/03/2020]. Flink Use cases. https://flink.apache.org/usecases.html. [Online; accessed 01/03/2020].
4. GraphX lib github. https://github.com/apache/spark/tree/master/graphx/src/main/scala/org/apache/spark/graphx/lib. GraphX lib github. https://github.com/apache/spark/tree/master/graphx/src/main/scala/org/apache/spark/graphx/lib.
5. How Verizon Media Group migrated from on-premises Apache Hadoop and Spark to Amazon EMR. https://aws.amazon.com/blogs/big-data/how-verizon-media-group-migrated-from-on-premises-apache-hadoop-and-spark-to-amazon-emr/. [Online; accessed 25/05/2020]. How Verizon Media Group migrated from on-premises Apache Hadoop and Spark to Amazon EMR. https://aws.amazon.com/blogs/big-data/how-verizon-media-group-migrated-from-on-premises-apache-hadoop-and-spark-to-amazon-emr/. [Online; accessed 25/05/2020].