Which music industry data analytics innovation first incorporated social media metrics and streaming data into Billboard chart rankings?

The music industry has undergone massive transformation through data analytics. From physical record sales tracking to sophisticated streaming metrics, the way music consumption is measured has revolutionized how artists, labels, and distributors make decisions. This poll tests your knowledge about a pivotal data analytics innovation that changed how music industry success is measured in the modern era.

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Billboard Hot Digital Songs Chart (2005)
Billboard Social 50 Chart (2010)
Billboard Music Industry Hot 100 Formula Revision (2013)
Nielsen SoundScan Streaming Integration (2015)