Twitch began as a radical social experiment called Justin.tv, where co-founder Justin Kan live-streamed his entire life. While the concept of 'lifecasting' intrigued early internet users, it was gaming content that unexpectedly took off, leading to the birth of Twitch in 2011. Built on real-time interaction and community engagement, Twitch redefined entertainment by turning gamers into celebrities, artists into influencers, and viewers into active participants. Acquired by Amazon for $970 million in 2014, Twitch became the dominant platform for live streaming, offering streamers multiple monetization avenues—subscriptions, Bits donations, ads, sponsorships, and merchandise sales. However, success on Twitch is far from guaranteed; while top creators earn millions, most struggle with visibility, burnout, and mental health challenges. The platform's unfiltered nature has led to both heartwarming moments and dramatic controversies—from charity streams raising millions to swatting incidents threatening streamers' lives. Twitch has also reshaped the gaming industry, influencing game design and marketing through its powerful viewer feedback loop. As competition intensifies with platforms like YouTube Gaming and Kick offering more favorable revenue splits, Twitch continues evolving beyond gaming into diverse categories like cooking, music, and political commentary. It has introduced features like Raids, Hype Trains, and interactive Extensions to deepen engagement. Looking ahead, Twitch faces ongoing challenges around moderation, regulation, and creator sustainability, but its potential for innovation—through AI, VR, and even blockchain—suggests it will remain at the forefront of live interactive media. From chaotic beginnings to billion-dollar influence, Twitch exemplifies how the internet can transform niche ideas into global phenomena.