TCP vs UDP vs QUIC | Why HTTP/3 Exists | Head-of-Line Blocking Explained Simply

How did we move from TCP to QUIC? In this video, I explain: Why TCP built the internet ? The real problem of TCP head-of-line blocking ? Why HTTP/2 multiplexing was not enough ? Why UDP was fast but unreliable? How QUIC combined speed, reliability, and security? Why HTTP/3 runs on QUIC ? This video explains modern web networking in a simple and intuitive way, using real-world examples.