YouTube is an American online video sharing and social media
platform owned by Google. Accessible worldwide, it was launched on
February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim,
three former employees of PayPal.
Instagram is a photo and video sharing social networking service
owned by Meta Platforms. It allows users to upload media that can be
edited with filters, be organized by hashtags, and be associated
with a location via geographical tagging.
TikTok, whose mainland Chinese counterpart is Douyin(Chinese: 抖音;
pinyin: Dǒuyīn; lit. 'Shaking sound'), is a short-form video hosting
service owned by Chinese Internet company ByteDance. It hosts
user-submitted videos, which can range in duration from three
seconds to 10 minutes.