Occasionally I will see articles about how Company X spends
x dollars on A, and Company Y spends
y dollars on B.
Here is an example form today: Apple spends more than $30 million on Amazon’s cloud every month
Where does this data come from? Where does it get disclosed? Suppose I wanted to learn more about how a public company spends its money. Where can I do so? The financial reports I read from companies just show amounts and categories but not vendor names.