RTMP is an older technology widely used for sending video to a live session, but rarely used for viewing streams. HLS, on the other hand, is commonly used by platforms like Twitch to deliver live streams to large audiences. WebRTC is a newer standard that supports interactive use cases like video calls and has low latency, making it suitable for real-time applications. The choice between RTMP, HLS, and WebRTC depends on factors such as latency requirements, scalability needs, and the type of application or service being built. While HLS offers advantages in terms of resilience to network issues, it comes at a cost of higher latency compared to WebRTC. WebRTC's low latency makes it suitable for interactive applications like video calls, but its trade-offs include lower average video quality and more complex infrastructure requirements.