olemus
tehnoloogiline kihtarhitektuur rakenduse või lahenduse moodustamiseks

Wiktionary:
1. a collection of interdependent existing technologies and methods used to create a particular product or service
The PHP programming language is part of the technology stack of many interactive websites.
2. the collection of technologies that one can use in a professional setting
The Lua programming language should be part of the technology stack of an aspiring games developer.

näiteid
OSI mudel, TCP/IP-mudel

https://en.wikipedia.org/wiki/Solution_stack

https://assets.ctfassets.net/3prze68gbwl1/6dUQMH1GCyYfu3hmlSHuSr/c813a4f2fd24723c974a253969259088/A_Comprehensive_Guide_to_the_Real-Time_Technology_Stack.pdf