TCP vs UDP: why your downloads are perfect but streams can glitch 🎮📡 TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) are transport-layer protocols that control how your data moves across the internet. Think of TCP as registered mail: it confirms delivery, tracks every packet, and makes sure everything arrives safely and in order. UDP is like tossing postcards in a mailbox: faster, lighter, but with no delivery guarantee. Real-world usage: ✅ TCP for: web traffic, file downl