| Standard viewability threshold (display) | 50% of pixels visible for ≥1 second (IAB/MRC viewability standard) |
| Standard viewability threshold (video) | 50% of pixels visible for ≥2 seconds (IAB/MRC viewability standard) |
| Typical DSP minimum budget | Varies widely; often $5,000–$25,000/month (Industry general range; platform-dependent) |
| Attribution window (common default) | 7-day click, 1-day view (Meta Ads default; varies by platform) |
| Average display CTR | Approximately 0.1% (Google Display Network benchmark, widely cited) |
Pricing Models: How You Pay for Ad Inventory
Ad channel conversations almost always begin with pricing. Understanding how costs are structured helps you compare channels fairly and set realistic budget expectations before a campaign launches.
| Standard viewability threshold (display) | 50% of pixels visible for ≥1 second (IAB/MRC viewability standard) |
| Standard viewability threshold (video) | 50% of pixels visible for ≥2 seconds (IAB/MRC viewability standard) |
| Typical DSP minimum budget | Varies widely; often $5,000–$25,000/month (Industry general range; platform-dependent) |
| Attribution window (common default) | 7-day click, 1-day view (Meta Ads default; varies by platform) |
| Average display CTR | Approximately 0.1% (Google Display Network benchmark, widely cited) |
CPM (cost per mille) charges per thousand impressions and suits campaigns built around reach—brand awareness, product launches, or saturating a new market. CPC (cost per click) shifts accountability to engagement; you pay only when someone acts. This model is common in search advertising, where intent signals make clicks highly valuable.
CPA (cost per acquisition) takes efficiency further, charging only when a user completes a target action such as a purchase or lead form. CPA pricing is often available through automated bidding strategies on major platforms, though it typically requires sufficient conversion data to optimize reliably. For a broader view of how these channels fit together, see the advertising channel landscape overview.
Performance Metrics: What to Track and Why
Metrics are only meaningful when they connect to campaign objectives. A high CTR on a brand awareness campaign may be flattering but irrelevant; a low CTR on a retargeting campaign targeting high-value accounts may still deliver strong returns.
Metrics Vary by Channel and Objective
Not every metric applies equally across all ad channels. Search campaigns prioritize CPC and conversion rate, while display and video campaigns lean on CPM, frequency, and viewability. Always evaluate performance against the objective that justified the channel choice in the first place. Comparing CTR across search and programmatic display, for instance, can lead to misleading conclusions.
ROAS is the headline efficiency metric for revenue-driven campaigns. Calculate it by dividing total revenue attributed to the campaign by total ad spend. Treat ROAS targets as directional benchmarks rather than guarantees—attribution models and measurement windows significantly affect the numbers you see.
Conversion rate measures what happens after the click. Even a well-optimized campaign will underperform if the landing page, offer, or checkout experience creates friction. Improving conversion rate often delivers more value per dollar than simply increasing ad spend. When evaluating a new channel, understanding which metrics it can reliably report is essential—see the practical framework for evaluating a new ad channel before committing budget.
Programmatic Ecosystem: DSPs, SSPs, and Exchanges
Programmatic advertising has become the dominant infrastructure for buying digital display, video, and audio inventory. Understanding its components helps marketers ask better questions of their agency partners and technology vendors.
A DSP (demand-side platform) is the advertiser's interface—it aggregates inventory from multiple ad exchanges, applies audience targeting, and executes real-time bids on the advertiser's behalf. On the other side, publishers use SSPs (supply-side platforms) to make their inventory available and maximize yield.
Ad exchanges are the marketplaces where DSPs and SSPs transact, typically through real-time bidding (RTB) auctions that resolve in milliseconds before a page loads. Private marketplace deals (PMPs) are a subset of programmatic buying where a publisher offers inventory to a select group of buyers at negotiated terms—bridging the gap between open exchange efficiency and direct deal control.
When allocating budget across this ecosystem, the same discipline that applies to broader campaign planning applies here. For guidance on avoiding over-extension, see building a multi-channel advertising strategy without spreading budget too thin.
Attribution and Audience Terms
Attribution is one of the most debated topics in digital advertising because it directly determines how campaigns are evaluated and how budgets are reallocated. Last-click attribution credits the final touchpoint before conversion—simple, but it systematically undervalues upper-funnel channels like display and social awareness. Data-driven attribution uses statistical modeling to distribute credit across all touchpoints and tends to produce a more accurate picture of channel contribution, though it requires meaningful conversion volume to function reliably.
Audience segmentation terms you'll encounter include first-party audiences (built from your own customer or website data), third-party audiences (purchased from data aggregators), and lookalike audiences (algorithmically generated groups who resemble your existing customers). Increasing privacy regulation and the deprecation of third-party cookies is shifting the industry toward first-party data strategies.
Retargeting re-engages users who have already shown intent. It is typically among the most efficient uses of ad spend because the audience is already familiar with the brand. For channel-specific audience mechanics, social media advertising across platforms covers how major platforms handle targeting and format selection.
This article provides general marketing education and does not constitute financial, legal, or professional advertising advice. Consult qualified practitioners for guidance specific to your business circumstances.