Technology stack
Also called tech stack, stack.
A technology stack is the combination of languages, frameworks, databases, and services used to build and run a product.
Example
A site might use TypeScript in the browser, a databaseA database is an organized collection of data that software can store, search, and update. for records, and a host to keep the site online. Together those choices are the stack.
Why it matters
The stack is a list of choices that have to work together. It is not a ranking of which tool is best, and it is not the same as a single framework.
Common confusion
Stack in this sense is the set of technologies. It is not a pile of error messages, which is a stack trace.
Sources
Updated September 30, 2026.