Bid strategy

A bid strategy tells an ad platform how to bid when competing in its auctions. On Meta, it determines whether the system should simply spend your budget to get as many results as possible, or work within a cost or return target that you set. The choice affects how much you spend, how many results you get and how stable delivery is.

Main options on Meta

Names have changed over time, but at the time of writing the main bid strategies are:

• Highest volume: formerly called lowest cost. The system aims to get the most results for your budget, without a cost target. It is the default for many campaigns.
• Cost per result goal: formerly cost cap. You set a target average cost per result, and the system tries to stay around it.
• ROAS goal: formerly minimum ROAS. You set a target return on ad spend for value-optimised campaigns.
• Bid cap: you set the maximum bid in each auction. This gives the most control but can limit delivery heavily if set too low.

Choosing a strategy

• Highest volume is a common starting point for new campaigns and for learning what costs look like.
• Cost or ROAS goals can help protect margins once you know your break-even ROAS and acceptable CPA.
• Bid caps tend to suit experienced buyers who understand auction dynamics well.

Trade-offs

Tighter controls usually mean less volume. If targets are set too aggressively, the ad set may under-spend or struggle to exit the learning phase. Many teams start with highest volume, gather data, then test cost or ROAS goals against it.