What specific scenario justifies the prioritization of 'Maximize Clicks' over 'Target CPA' even when lead generation is the primary campaign objective?

Prioritizing 'Maximize Clicks' over 'Target CPA,' even when lead generation is the primary campaign objective, is justified when launching a new campaign or significantly expanding an existing one where limited or no historical conversion data is available. 'Maximize Clicks' is an automated bidding strategy that aims to get as many clicks as possible within a specified budget, without focusing on the cost per acquisition (CPA). 'Target CPA,' conversely, aims to achieve a specific CPA, but it requires sufficient conversion data to accurately predict the cost of acquiring a lead. When a campaign lacks historical conversion data, 'Target CPA' will struggle to make informed bidding decisions, potentially leading to very low traffic volume or even no impressions at all, because the algorithm lacks the information needed to optimize for CPA effectively. In this scenario, 'Maximize Clicks' is used to gather data quickly. By driving a high volume of traffic, even if the initial CPA is higher than desired, you can collect valuable insights about which keywords, ad copy, and audience segments are most likely to convert. This data can then be used to refine targeting, improve ad relevance, and optimize the landing page experience. Once a sufficient amount of conversion data has been collected (typically dozens or even hundreds of conversions), the campaign can then be transitioned to 'Target CPA' to optimize for cost-effective lead generation based on the newly acquired insights. Therefore, 'Maximize Clicks' serves as a crucial data-gathering phase before effectively implementing 'Target CPA' for lead generation campaigns lacking initial conversion history.