A number that is simply printed on the page gets read. A number that counts up gets watched. That is the whole argument for animating your proof: revenue generated, clients served, calls booked, show-up rate. The motion buys you the two seconds it takes for the figure to register.
The counter fires when it scrolls into view rather than on page load, so the animation happens while the visitor is looking at it instead of finishing before they arrive. It renders the final number in the markup first and rewinds to the start value before animating, which means the correct figure is still there on any page where JavaScript never runs.
The same category carries the rest of the proof row. Logo Cloud slides client logos past on a loop, Live Users Now shows a pulsing presence count with flipping digits, and Animated Tooltip stacks the faces behind the result and names each one on hover.