RTMP, or Real-Time Messaging Protocol, is a streaming protocol developed by Adobe for transmitting audio, video, and data over the internet. It is commonly used for live streaming and allows for low-latency communication, making it ideal for applications like online gaming and live broadcasts. RTMP works by establishing a persistent connection between a client and a server, enabling the continuous flow of media. It supports various codecs and can deliver high-quality content, making it a popular choice for platforms that require real-time interaction, such as Twitch and YouTube Live.