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ByteDance runs the short-video apps TikTok and Douyin, plus a family of other apps, and makes most of its money selling ads inside them.
ByteDance is a Chinese internet company that builds apps people stare at for hours. Its most famous one is TikTok, the short-video app with the endless feed of dancing, jokes, and random clips that people scroll through and swipe past. In China, the same basic app is called Douyin. The company also runs news and content apps like Toutiao, along with a range of smaller apps for reading, music, and photos.
The money comes mostly from advertising. Brands pay to put short video ads between the clips you swipe through, the same way ads show up on other social feeds. ByteDance keeps that ad machine humming by using recommendation software that is unusually good at guessing what will hold your attention next. That same engine is why TikTok feels weirdly addictive: the app studies what you pause on and keeps feeding you more of it. Users pay nothing, so the real customers are the advertisers. TikTok is the growth engine outside China, and it has turned ByteDance into one of the most valuable private companies in the world. It has also made the company a geopolitical lightning rod. The United States passed a law forcing TikTok's American operations to be sold or shut down, and ByteDance has been working through a deal that would put most of TikTok's US business into a joint venture, with American investors holding the majority and ByteDance keeping a minority stake and a role in running the app. China's government gets a say in any such sale, which has made the whole thing a slow-motion tug of war.
In 2012, Zhang Yiming and Liang Rubo started ByteDance in Beijing with a simple but powerful idea: instead of paying editors to decide what news people should read, let data and algorithms figure out what each person actually wants. That fall they launched Toutiao, a news app that learned your tastes as you scrolled. It worked, and it set the pattern for everything the company would build.
Four years later, ByteDance launched Douyin, a short-video app where people lip-sync, dance and joke around. Within a year it had 100 million users, which told the founders something important: their recommendation engine worked just as well on video as on news. Short video, not text, would become the heart of the business.
ByteDance bought Musical.ly, a lip-syncing app with a young following in the Americas and Europe, for a billion dollars. A year later it folded that app into TikTok, and the pieces suddenly clicked: TikTok was strong in Asia, Musical.ly was strong in the West, and together they were one global app.
ByteDance launched TikTok as the international version of Douyin, and Zhang Yiming made the case plainly: China had only about a fifth of the world's internet users, so staying home meant missing most of the market. Going global was not a bonus. It was the plan.
Then politics caught up. India banned TikTok and other Chinese apps after a border clash, and the Trump administration ordered ByteDance to sell TikTok's U.S. operations within 90 days, pushing it into talks with Oracle and Walmart. A video app had become a bargaining chip between superpowers, and the company's biggest market was suddenly at risk.
In 2021, Zhang Yiming stepped down as CEO at 38 and handed the job to Liang Rubo, his college roommate and longtime colleague. Zhang had built a social media powerhouse, but one that kept running into regulators around the world, and the handover marked a shift from fast-growing startup to something bigger and more complicated.
After ChatGPT came out, Zhang Yiming decided ByteDance needed its own consumer AI chatbot, and he gave the job to a team in Shanghai. The result was Doubao, which grew into China's most popular AI app, with hundreds of millions of monthly users. The company that had mastered feeding people videos now set out to master talking with them.
Years of pressure finally produced a deal: in 2026, a joint venture majority-owned by Americans took over TikTok's U.S. business, leaving ByteDance with less than a fifth of it. By then the company had already turned its focus to AI, with Doubao passing 100 million daily users and plans to spend billions on chips and infrastructure. The video app that made it famous was no longer the whole story.
Inside China, ByteDance's apps compete for eyeballs and ad budgets with other big platforms, including Tencent and its WeChat, and with Kuaishou Technology.HK]], a strong short-video rival. Overseas, TikTok's main fight is against Alphabet's YouTube and Meta Platforms's Instagram and Reels. ByteDance is also pushing into e-commerce, letting people buy products directly from videos and livestreams, which puts it closer to competing with shopping apps. As a private company it doesn't publish full financials or pay dividends, and it has spent heavily to keep growing, funding new products and buying back employee shares rather than returning cash to outside shareholders.
Saved answer · last researched 4 Nov 2026