TikTok is the ByteDance-owned social platform known for short viral videos and linked to Musical.ly in the West.
ByteDance launched Douyin in China in 2016 and introduced its international version, TikTok, outside China. ByteDance later acquired Musical.ly, the popular lip-sync video app founded in 2014, and merged it into TikTok in 2018. Musical.ly users, accounts, and content moved to the TikTok service.
The merger helped TikTok inherit a large community of creators already making short music-centered clips. Its recommendation system, full-screen vertical videos, editing tools, sounds, and remix-friendly formats then helped it spread rapidly around the world.
The wording can cause a historical mix-up: TikTok was not simply renamed from Musical.ly everywhere. It developed as ByteDance’s international counterpart to Douyin, while Musical.ly was acquired and folded into the platform later. Triller, Snapchat, and Vine also became associated with short-form video, but none is the platform that resulted from the Musical.ly-TikTok merger.