How Enhanced CPC works
Enhanced CPC keeps you in control of base bids but lets Google raise or lower each one in real time according to the predicted probability of a conversion. If a particular auction looks likely to convert, eCPC bids up, and if it looks weak, it bids down. Unlike Target CPA or Target ROAS, it does not chase a specific efficiency goal, it simply tries to get more conversions from the manual bids you set. That makes it a lighter-touch automation, still anchored to your judgment about base bid levels.
Why eCPC is a transitional strategy
Fully automated strategies like Target CPA and Target ROAS need a reliable base of recent conversions to learn from. A new campaign or a thin-volume account often does not have that yet, and switching straight to a target-based strategy can produce erratic bidding while the model starves for data. Enhanced CPC is a sensible bridge: it adds some conversion-aware intelligence without demanding the data volume a target strategy requires, letting the account accumulate conversions until it can graduate to a full Smart Bidding strategy.
The limits of Enhanced CPC
eCPC is not the destination. Because it optimises loosely for conversions rather than to a defined efficiency target, it cannot protect a ROAS floor or hit a cost-per-acquisition goal the way target strategies can. On accounts with enough conversion data, staying on eCPC leaves performance on the table compared with Target ROAS or Target CPA. The signal that it is time to move on is simple: once the campaign has a stable base of conversions, a target-based strategy will usually outperform it.
How iClick uses Enhanced CPC
iClick uses Enhanced CPC as a bridge, not a destination, deploying it while a new or thin-volume campaign accumulates the conversion history that Target CPA or Target ROAS needs to learn. The rule is to graduate the campaign to a target-based strategy once it has a stable conversion base, because eCPC cannot hold an efficiency floor. Leaving a data-rich account on eCPC out of caution usually leaves performance on the table.
