Google Ads Bidding Strategies Compared

Bidding strategies in Google Ads determine how you spend your budget — whether you set bids manually or let Google's automation optimise toward a goal. Choosing the right one is a foundational decision, because the wrong bidding strategy can waste budget or fail to hit your objectives no matter how good your ads are. Here's a comparison of the main bidding strategies: manual versus automated, what each is for, and how to choose.

The two families: manual and automated

The fundamental split: manual bidding (you set the bids yourself, controlling exactly what you pay for clicks — maximum control, but labour-intensive and reliant on your judgment); versus automated bidding (Google's algorithms set bids automatically, optimising toward a goal you choose — less control, but leveraging Google's data and machine learning to optimise at a scale and speed you can't manually, per Smart Bidding). The tradeoff is control versus optimisation power: manual gives you the reins but demands time and skill and can't match the algorithm's data-driven optimisation; automated hands over control but can optimise more effectively using signals (device, location, time, audience, and more) you couldn't manually juggle. The industry has shifted heavily toward automated bidding, because Google's algorithms — with access to vast real-time signals — often optimise better than manual bidding can, especially at scale. But automated bidding requires good conversion tracking to optimise toward (it needs to know what success looks like) and enough data to learn from. So the choice isn't simply "automated is better" — it depends on your goals, data, and how much control you want.

The main strategies and what they're for

The common bidding strategies, mapped to goals: Manual CPC (you set click bids — maximum control, for those who want it, though increasingly supplemented or replaced by automation); Maximise Clicks (automated to get the most clicks within budget — for traffic goals, though clicks aren't conversions); Maximise Conversions (automated to get the most conversions within budget — a common goal-driven choice when you want volume of conversions); Target CPA (cost per acquisition) (automated to get conversions at a target cost each — for controlling your cost per conversion, a Smart Bidding strategy); Target ROAS (return on ad spend) (automated to hit a target return on spend — for value/revenue goals, especially ecommerce, optimising toward revenue not just conversions); Maximise Conversion Value (automated for the most conversion value within budget); and Target Impression Share (for visibility goals — hitting a target share of impressions, useful for brand or prominence). Each targets a different objective — clicks, conversions, cost-per-conversion, return, or visibility — so the strategy must match what you're actually trying to achieve. Most conversion-focused advertisers use the automated conversion or value strategies (Maximise Conversions, Target CPA, Target ROAS), which optimise toward business outcomes.

How to choose a bidding strategy

The decision framework: start from your goal (conversions → Maximise Conversions or Target CPA; return/revenue → Target ROAS or Maximise Conversion Value; traffic → Maximise Clicks; visibility → Target Impression Share — let your objective pick the strategy); ensure you have conversion tracking (automated conversion/value strategies require accurate conversion tracking to optimise toward — without it, they can't work, so tracking comes first); consider your data volume (automated strategies need enough conversion data to learn — new or low-volume accounts may need to start simpler (Maximise Clicks or Maximise Conversions) before targets like CPA/ROAS have data to work with); lean automated for most (Google's Smart Bidding often outperforms manual by using signals you can't, so most advertisers benefit from automated conversion/value bidding — but understand you're handing over control); set realistic targets (Target CPA/ROAS work only with achievable targets — too aggressive and they throttle delivery); monitor and adjust (automated doesn't mean set-and-forget — watch performance, adjust targets, and ensure it's hitting your goals, per the audit discipline); and align with budget (bidding works within your budget allocation). Choose the strategy that matches your goal, ensure the tracking and data to support it, and monitor it — turning your budget into the outcomes you're after, alongside the authority you build (our half).

Frequently asked questions

What are the Google Ads bidding strategies?

They fall into manual (you set bids — maximum control) and automated (Google optimises bids toward a goal). The main automated ones: Maximise Clicks (traffic), Maximise Conversions (conversion volume), Target CPA (conversions at a target cost each), Target ROAS (a target return on spend — for value/revenue goals), and Target Impression Share (visibility). Each targets a different objective, so the strategy must match your goal. Most conversion-focused advertisers use automated conversion or value strategies, which optimise toward business outcomes via Smart Bidding.

Manual or automated bidding — which is better?

It depends on your goals, data, and control preference — but the industry has shifted heavily toward automated, because Google's algorithms optimise using vast real-time signals (device, location, time, audience) you can't manually juggle, often outperforming manual bidding at scale. However, automated strategies need good conversion tracking and enough data to learn. Manual offers maximum control but demands time and skill. Most advertisers benefit from automated conversion/value bidding (per Smart Bidding), understanding they're handing over control — but new or low-data accounts may start simpler.

Which bidding strategy should I use?

Match it to your goal: conversions → Maximise Conversions or Target CPA; return/revenue → Target ROAS (especially ecommerce); traffic → Maximise Clicks; visibility → Target Impression Share. Ensure you have accurate conversion tracking (automated conversion strategies require it) and enough data (targets like CPA/ROAS need conversion history to learn from — start simpler if new). Set realistic targets, lean automated for most cases, and monitor performance. Let your objective drive the choice, turning budget into outcomes alongside the authority you build (our lane).