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In a recent Speedify video, CEO Alex Gizis and Lead Developer Kevin walk viewers through why TCP remains the backbone protocol of the internet after four decades. They explain networking layers in plain terms, show how TCP guarantees ordered, reliable delivery while UDP trades reliability for speed, and describe how newer solutions like QUIC and HTTP/3 build TCP-like features on top of UDP to better serve modern web traffic. The takeaway is that TCP still holds the connection, doing the heavy lifting for fairness and reliability so applications do not unexpectedly “drop the call.”
The hosts also cover practical limits and fixes that matter to real users, from MTU and jumbo packets to bufferbloat and congestion control improvements like CUBIC and BBR. Speedify’s new router feature, a performance-enhancing proxy or TCP accelerator, terminates TCP locally and moves data across Speedify’s transport to a server that opens a fresh TCP leg to the destination. That lets the software group small Wi-Fi packets into larger, more efficient frames and bond multiple links—Wi-Fi, Starlink, 5G, wired—so your traffic gets on the fast track instead of getting stuck in a slow lane.
Looking ahead Alex and Kevin discuss mmWave, the growing role of IPv6 for IoT with Thread and Matter, and why protocol evolution is often about small, practical changes rather than wholesale replacements. TCP has momentum because it is widely implemented and continues to improve, but new options will shine for specific use cases, especially high-bandwidth wireless. If you want to speed up a router, try Speedify 15.9 with the PEP option and see how accelerated connections keep your apps running packet-perfect.