YouTube was fined $170 million for collecting data on child users.
The 7-year old Ryan of 'Ryan Toysreview' was announced as the year's highest-paid YouTube star earning $22 million.
Ariana Grande released her 'Thank U Next' music video.
A shooting took place at YouTube's headquarters in San Bruno, California.
The video for Psy's Gangnam Style reached two billion views on YouTube.
The vice president of Google, Susan Wojcicki, became the CEO of YouTube.
Psy's music video for 'Gangnam Style' surpassed one billion views on YouTube, becoming the first video to do so in the website's history.
5 Seconds of Summer member Luke Hemmings posted his first YouTube video.
Casey Neistat uploaded his first-ever YouTube video.
YouTube Live had the largest viewed broadcast ever, with guest artists performing from San Francisco and Tokyo.
American pop singer Ariana Grande joined YouTube at 13 years old.
Google announced that it had acquired YouTube for $1.65 billion.
The first video was uploaded to YouTube.
YouTube was founded & the domain name youtube.com was activated.
