How it works? Its like saving letter head only once for multiple letters.
Kind of like spreadsheet but can write code in the “cells”. With [in] indicates input [out] indicates outputs. Can write math formulas and import libraries. Output shows in the next “cell”. Can save & print the whole page. Good for scientific computing I guess?
Virtual Machine vs. Containers
Containers are more efficient than VM and just as secure. It didn’t used to be that way but recently improvements are made.