REST
conceptsRepresentational State Transfer — an architectural style for distributed hypermedia systems defining constraints for scalable web services
Pronunciation
Correct
rest
/rɛst/
One syllable, pronounced like the English word 'rest'. Coined by Roy Fielding in his 2000 doctoral dissertation. Always spoken as a word, not spelled out. Related terms: RESTful, REST API.
Source: www.ics.uci.edu(official spec)