Which innovation, first introduced in 1994, revolutionized digital marketing by enabling companies to track user behavior online?

The landscape of digital marketing has been shaped by numerous technological breakthroughs and innovative approaches. Behind every major shift in how brands connect with consumers, there's usually a groundbreaking invention or discovery that changed the rules of engagement. This trivia question explores one such pivotal moment that transformed how businesses approach their digital marketing strategies. Test your knowledge of marketing history and the technological innovations that revolutionized how products reach consumers.

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The HTTP cookie
The QR code
Google AdWords
HTML5 technology