olemus
ISO/IEC 2382:
üheainsa andmeüksuse edastus lähte-teenusepääsupunktist
ühte või mitmesse siht-teenusepääsupunkti ühenduse loomiseta
= the transmission of a single unit of data from a source service access point to one or more destination service access points without establishing a connection
https://www.researchgate.net/profile/Anatol_Badach/publication/335207402/figure/fig1/AS:792538105528322@1565967217871/Connectionless-versus-connection-oriented-IP-packet-transmission-a-connectionless.png

ülevaateid
http://faculty.kfupm.edu.sa/ee/wajih/files/Lecture%2035%20(101).pdf
https://techdifferences.com/difference-between-connection-oriented-and-connection-less-services.html
https://en.wikipedia.org/wiki/Connectionless_communication

standardid
https://tools.ietf.org/html/rfc787

protokolle
ICMP, IP, IPX, UDP