To me, the best thing to come out of the Big Data era was Spark Streaming. That tool provides a nice architecture for processing a stream of data in near real-t

To me, the best thing to come out of the Big Data era was Spark Streaming. That tool provides a nice architecture for processing a stream of data in near real-time, from multiple data sources no less, that we didn't have before. Spark in general was a great tool to get out of the Big Data era.