Why Site Speed Is a Marketing Decision, Not a Technical One
Performance is usually filed under engineering. It belongs in the marketing budget, because it changes cost per acquisition directly.
When a page takes four seconds to become useful, a meaningful share of the people who clicked your ad never see it. You paid for that click regardless. Performance is therefore not a hygiene task — it is a direct multiplier on every pound of media spend.
Three numbers worth knowing
- Largest Contentful Paint: how long until the main content is actually visible. This is what a visitor experiences as "loading".
- Interaction to Next Paint: how quickly the page responds when someone taps or clicks. Slow here reads as broken.
- Cumulative Layout Shift: how much the page jumps as it loads. This is what makes people tap the wrong thing and leave.
Where the weight usually is
On most underperforming sites the problem is not the code that was written — it is what was installed. Heavy page builders, half a dozen tracking scripts, an animation library used for two fades, and unoptimised hero images account for the majority of the load in practice.
The fix is rarely exotic. Serve modern image formats at the size actually displayed, defer anything not needed for first paint, reserve space for media so nothing shifts, and be genuinely reluctant about third-party scripts.
The compounding part
A fast site improves paid conversion, organic ranking signals and the experience of every visitor who arrives from any channel — simultaneously. Very few marketing investments improve all three at once, which is why it belongs near the top of the list rather than in a backlog.