How lead scoring works
Lead scoring assigns a value to each lead based on how closely it resembles a good customer. Firmographic attributes like company size, industry, and role capture fit, while behavioural signals like pages viewed, demo requests, and email engagement capture intent. Some teams use simple rules, others use predictive models trained on which past leads became customers. The output is a score or grade that lets sales prioritise, and, crucially for advertisers, that gives marketing a quality signal far richer than the binary fact that a form was submitted.
Why raw leads mislead bidding
If you send every form fill to Google Ads as an identical conversion, Smart Bidding optimises to maximise form fills, and it will find you the cheapest ones. Cheap leads are often cheap for a reason: wrong company size, no budget, tyre-kickers. The algorithm is doing exactly what you asked, and what you asked for is wrong. Lead scoring fixes the instruction by distinguishing a high-fit, high-intent lead from a low-quality one, so bidding can be told to value the former far more than the latter.
Closing the loop into bidding
The mechanism to act on lead scores in advertising is offline conversion import. When a lead comes in, its GCLID is captured. As the lead is scored and progresses through the funnel, that information is sent back to Google Ads, either as a scored conversion value or as distinct conversion actions for qualified leads and closed deals. Smart Bidding then learns to chase high-scoring leads and closed customers instead of raw volume. Without this loop, lead scoring improves sales prioritisation but never reaches the bidding algorithm.
How iClick uses lead scoring
iClick wires lead scores back into Google Ads through offline conversion import, so Smart Bidding optimises toward high-fit, high-intent leads and closed customers rather than the cheapest form fills. The rule is that the value passed must come from the client's real CRM outcomes, not a marketing guess at quality, because bidding will faithfully chase whatever signal it is given. Closing this loop is usually the highest-leverage measurement change on a lead-gen account.
