Glossary
What Is CPM (Cost Per Thousand Impressions)?
CPM (Cost Per Mille) is the price you pay for 1,000 ad impressions — the cost to show your ad to 1,000 people. Formula: (total ad spend ÷ total impressions) × 1,000. If you spend $50 and get 10,000 impressions, your CPM is $5.
CPM (Cost Per Thousand Impressions) explained
CPM is the foundational cost metric in display and social advertising. Even when you optimize for clicks or conversions, you're still paying for impressions under the hood — the platform just manages the bidding automatically. CPM varies dramatically by platform, audience, and timing: - Meta (general audiences): $5-15 CPM - Meta (B2B/high-value audiences): $15-40 CPM - LinkedIn: $30-80 CPM (premium audience, limited inventory) - Google Display Network: $2-10 CPM - TikTok: $3-10 CPM - Programmatic display: $1-5 CPM What drives CPM up: narrow audience targeting (fewer people to show ads to = higher auction prices), competitive verticals (fintech, insurance, legal), Q4 seasonality, and premium placements (Instagram Stories vs Audience Network). What drives CPM down: broader audiences, less competitive industries, non-peak timing, and high ad quality scores. For SaaS founders, CPM matters as a diagnostic metric rather than an optimization target. You don't optimize for cheap impressions — you optimize for conversions. But monitoring CPM helps you understand why your CPC or CPA might be changing. If CPM spikes, your costs rise even if your CTR stays constant.
Why this matters for SaaS marketing
Infinall's Strategy Agent factors platform CPM ranges into budget recommendations. If your ICP is best reached on LinkedIn (high CPM), the strategy accounts for that with appropriate budget sizing. If your audience is accessible on Meta (lower CPM), the budget can be smaller while achieving the same reach. This prevents the common mistake of setting a $500/month budget on a platform where CPMs are $60+ and expecting meaningful results.
Frequently asked questions
Should I optimize for lowest CPM?+
Almost never. Low CPM usually means broad, untargeted audiences. You'll show ads to people who will never buy your SaaS product. Optimize for cost per conversion or ROAS instead — a higher CPM with the right audience almost always outperforms cheap impressions to the wrong people.
Why is my CPM different from benchmarks?+
CPM depends on your specific audience size, geographic targeting (US CPMs are higher than global), industry competition, time of year, and ad quality score. Benchmarks are averages — your actual CPM will vary based on these factors.
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