We are only about 30 years into the age of software, about 20 years into the age of the internet, and about 2 years into the age of artificial intelligence

Which innovations over the last 2 years most indicate a new age of artificial intelligence?

I undertook some research, and noticed:

  3 Months Ago: Google Translate AI had a breakthrough
  5 Months Ago: Amazon/Facebook/Google/IBM/Microsoft launch an AI Partnership
  1 Year Ago: AlphaGo has a big win and OpenAI is founded
  2 Years Ago: Google (now Waymo) performs its first public driverless ride
  3 Years Ago: Google acquires DeepMind and interest in Deep Learning takes off
  6 Years Ago: IBM Watson wins Jeopardy

All indications suggest increased interest and investment in AI, but from an external perspective I'm interested to know whether quantitative changes (big data, cloud infrastructure, GPU processing speed etc.) and increased interest have genuinely spurred a qualitative new era of AI free of the pattern of "AI Winters" (https://en.wikipedia.org/wiki/AI_winter).