| Feature | QUIC | TCP |
|---|---|---|
| Transport Protocol | UDP | TCP |
| Encryption | Built-in TLS 1.3 | Separate TLS handshake |
| Multiplexing | Streams sent independently | Blocked by lost packets |
| Connection Establishment | Faster with 0-RTT resumption | Requires multiple round trips |
| Packet Loss Handling | FEC and better congestion control | Retransmission causes delays |