Final answer:
The most popular bidding strategy for programmatic advertising is Cost-Per-Thousand-Impressions (CPM) bidding, which allows advertisers to bid on the number of impressions or views their ads will receive.
Step-by-step explanation:
The most popular bidding strategy for programmatic advertising is Cost-Per-Thousand-Impressions (CPM) bidding. CPM bidding allows advertisers to bid on the number of impressions or views their ads will receive. This strategy is commonly used in display advertising where advertisers pay for every 1,000 impressions their ad receives.
CPM bidding is advantageous because it allows advertisers to reach a large audience and increase brand visibility. However, it may not be as effective in driving immediate conversions or actions from users.
Other bidding strategies such as Cost-Per-Click (CPC) bidding and Cost-Per-Action (CPA) bidding are also used in programmatic advertising but may be less popular compared to CPM bidding.