olemus
mudel, mis struktureerib rakenduse kolmeks eristatavaks loogikakihiks
= the model that structures an application into three distinct logical tiers

näiteid
tarkvara klient-server--arhitektuur, milles on andmehalduse kiht, rakendustöötluse kiht, esituskiht
= software client-server--architecture in which there is a data management layer, an application processing layer, a presentation layer

https://duckduckgo.com/?q=three-tier+architecture&t=h_&iax=images&ia=images

ülevaateid
https://www.techopedia.com/2/32100/software/a-detailed-look-at-3-tier-software-architecture

https://medium.com/coffeetechandme/three-tier-architecture-the-beginning-2d2f6063fa1e

https://en.wikipedia.org/wiki/Multitier_architecture#Three-tier_architecture

http://epgp.inflibnet.ac.in/epgpdata/uploads/epgp_content/S000007CS/P001063/M017513/ET/1474626693etext-mod15.pdf

https://docs.oracle.com/cd/E19728-01/820-2550/tiers_intro.html