Will customers wait for it?
How many separate files the page loads
We check this as: Request count (median of 3)
Why it matters
Every image, script, and stylesheet is a separate request your visitor's browser has to make. A page built from dozens of scattered pieces is slower to load than one built lean.
How we deliver it
We measure this directly, the median of three real page loads, and keep the number of separate files low by design.