Bidding
Bidding is the process of setting bids in advertising systems or auctions to gain impressions, clicks, or other desired actions.
Simply put:
advertisers competing for ad space through bids
Where bidding is used
- Google Ads
- Yandex Direct
- Meta Ads
- programmatic advertising
- RTB auctions
- marketplaces
How bidding works
Advertisers specify:
- how much they are willing to pay
- per click (CPC)
- per thousand impressions (CPM)
- per conversion (CPA)
The ad system runs an auction and determines whose ad will be shown.
Types of bidding
- Manual bidding — Bids are set manually by a specialist.
- Automated bidding — The system optimizes bids automatically using algorithms and AI.
Popular strategies
- Maximize Clicks
- Target CPA
- Target ROAS
- Maximize Conversions
- CPM / CPC / CPA bidding
What influences winning an auction
Not just the bid, but also:
- ad quality
- CTR
- relevance
- landing page quality
- predicted performance
Example
Two advertisers want to show an ad for the same query:
- First bids $1 per click
- Second bids $0.80 but has higher CTR and relevance
In some cases, the second advertiser may win.
Why bidding is needed
It helps to:
- manage the advertising budget
- improve ad effectiveness
- gain more conversions
- optimize customer acquisition cost
Risks
- Bids too high → budget overspend
- Bids too low → loss of reach and traffic
- Wrong strategy → reduced ROI
Key takeaway
Bidding is the bid system in digital advertising that determines an ad’s participation in auctions and its display to users. Effective bidding helps achieve better results at optimal cost.
