UDP is an implementation detail of QUIC, just a way to give IP-ish functionality to userspace. In practice, QUIC is a TCP alternative.
The OSI layer model is not necessarily as relevant as it used to be.
The OSI layer model is not necessarily as relevant as it used to be.
The OSI layer model is extremely relevant to the Cisco network engineers running the edges of the large FAANG companies, hyperscalers etc. that connect them to the internet.
I'm just pointing out that UDP is an extremely thin wrapper over IP and the preferred way of implementing new protocols. It seems likely we'll eventually replace at least some of our protocols and deprecate old ones and I was under the impression new ones tended to be little endian.