In tech, the stack, or the solution stack, is the set of software and hardware resources that are necessary for a web product to function.
You will often hear developers or techies ask questions like, “What’s your stack?” which is another way of asking: what programming languages and infrastructure do you use for your web app?
Other common configurations are LAMR (Linux, Apache, MySQL, and Ruby) or LYME (Linux, Yaws, Mnesia, Erlang) or LYCE (Linux, Yaws, CouchDB, Erlang) or WISA (Windows Server, IIS, SQL, ASP .NET) or our favorite, LEAP (Linux, Eucalyptus, AppScale, Python). As we have previously discussed, techies love them an acronym.
If you were to say, move down the stack, you would go from knowing only frontend technologies to knowing programming languages and then learning how to set up your own web server.