The bottom lineAlmost always both — the question is the ratio.
For nearly every business the answer isn’t SEO or PPC; it’s what mix, in what order. PPC is the right lead when you need pipeline now, are testing a new market, or run on launches and promotions — it buys speed and control today. SEO is the right lead when margin and time are on your side and you want a channel you own, because the cost per lead only falls as it compounds.
The mistake that costs the most is treating them as rivals and cutting SEO the moment the paid budget tightens — which resets the compounding you already paid months to build, and hands the ground back to competitors who kept going. The ratio should move as you do: weight to paid early to generate revenue and learn what converts, then shift spend toward owned assets as rankings climb, keeping paid for the launches and head terms SEO can’t economically win.
Our recommendation: if you can only fund one this quarter, fund the one that matches your urgency — but plan the handoff to the other from day one, so you’re never starting the slow channel from cold. The businesses that win run both off one set of keyword and conversion data, so paid sharpens organic and organic makes paid cheaper.