Before revision: The performance of many common Internet applications can benefit from out-of-order delivery, a feature all IETF transportssince TCPhave included. Yet latency-sensitive applications still frequently build on in-order TCP despite its performance drawbacks, for reasons such as network compatibility and TCP's cultural inertia.
After revision: Internet applications increasingly employ TCP not as a stream abstraction, but as a substrate for application-level transports, a use that converts TCP's in-order TCP despite its performance drawbacks, for reasons such as network compatibility and TCP's cultural inertia.