B2B performance marketing: paid pipeline and CAC

Paid demand you can trace

Performance marketing in B2B is spend you can follow from click or impression to a sales object: MQL if you still use that word, opportunity, and revenue. Brand campaigns can be performance too if you instrument them. The distinction that matters is whether finance can see a cost per opportunity, not whether the creative looks like an ad.

B2B lag kills naive dashboards. A click in March can close in September. If you optimize only to form fills, you will buy cheap emails from people who will never sit on a procurement committee. Report CAC on closed-won with a cohort window that matches your cycle, even if the number looks worse than the SaaS Twitter screenshot you were shown.

What Google Ads is for

Google Ads captures existing demand. High-intent queries (category plus software, competitor plus alternative, problem plus tool) are where search earns its keep. Broad match on generic thought-leadership terms will spend the budget on students and job seekers. Negative keywords are part of the creative brief, not an afterthought.

Landing pages should match the query. A competitor-alternative ad that lands on the homepage is how you pay for bounce. Use conversion tracking that fires on a qualified action, and pass GCLID into the CRM so sales can disagree with marketing using the same records.

CAC math that survives a board meeting

Blended CAC hides a dying channel inside a healthy one. Split paid search, paid social, and retargeting. Include tools, agency fees, and the SDR time that works the leads. Exclude them and you will look efficient until headcount shows up in opex.

Target CAC is a function of LTV and payback, not a round number from a peer company. If your ACV is $18k and sales needs three months, a $400 MQL that never becomes pipeline is not a win. Kill campaigns on opportunity quality, not on CTR.

Creative is still the lever

Once the query set is honest, the ad and the page do the rest. Specific claims, a screenshot, and a limit you admit will outperform a stock photo of a handshake. Refresh when frequency climbs and CPA follows. Do not refresh because the calendar says 'new creative Friday'.