This question should be moved to the History Discussion Forum so you could get suggestions from more people with other ideas.
I would suggest that the invention of the digital computer has been and will continue to be the driving force of change in society in the recent past and for the foreseeable future. Made possible by the advent of personal computers has been the explosion of communications methodologies now being called "social media." The Internet has opened up avenues to access knowledge that were unimaginable before the advent of the computer.
Businesses and governments can now track activities and expenses and can make predictions that were impractical due to the volume of data required. Computer-aided design programs are allowing for the development of new materials, methods, and equipment that will continue to revolutionize life as we know it.
Whether you want to call it "The Age of the Digital Computer" or "The Age of Technology," the impact has been farreaching and continues to grow.