What the fuck is a stack?

It's the prefix of stackoverflow.

It's the suffix of haystack

A LIFO queue

@philcr, as in a data structure or as in "work stack"/"fullstack"?

@FarfalleCode as in when some one describes full stack developer. It sounds like a buzz word.

As I visualize it, a "Stack" is the various layers to a system/application. For example:
HTML/SASS/PHP
Django
MySQL
Apache
Linux
-That is one stack, another:
Bootstrap/JavaScript/AngularJS
Postgres
Windows Server
***I just picked semi-random protocols/languages/frameworks (which could possibly not make sense in reality), but I think it gets the point across... I hope...
Ultimately, it is all the pieces that are required to run your Program/App, and I would just google stack variations for more examples

@FarfalleCode so my primary experience of Windows Server, MS SQL Server and VB would technically make me full stack dev

Sometimes it's just buzzwords if someone in HR is making the job description. Some tech companies treat full stack differently. My company treats full stack as, you know how to setup AWS, the deployment pipeline, config management, log management, database setup and maintenance, back end code, front end code, amongst other things. For others, it's just the front end and back end code, with some minor database setup.

Thanks guys some good comments in there.