Applying a single attribution model, like last-touch, to all channels is a mistake. It undervalues top-of-funnel activities and can lead to budget cuts that starve the pipeline. Instead, measure each channel based on its intended outcome and funnel stage.

Economic pressures have shifted marketing focus from upper-funnel vanity metrics like clicks and impressions to proving direct return on investment. The days of 'free money' are over, and every marketing dollar must be justified with tangible results, making performance-based channels more attractive.

TV lacks a click, so last-click attribution models will severely undervalue its impact. A modern approach requires a holistic dashboard that triangulates performance across multiple metrics, including incremental CPA, view-through CPA, attributable Amazon purchases, and lift in retail sales.

Agencies often present a blended PPC ROAS that includes high-performing branded search, inflating performance. Demand a separate ROAS for non-brand "prospecting" campaigns to understand the true, scalable return before increasing ad spend, as this reveals your actual cost of new customer acquisition.

Don't get distracted by proxy metrics like CPC or CPM. Define a single "king goal" for your business, such as a target ROAS or CPA. If this one crucial metric is on target, you can confidently ignore fluctuations in all the others and focus on what truly drives the business.

Focusing on a low Cost Per Lead is a common mistake; cheap leads often fail to convert. The more meaningful metric is Customer Acquisition Cost—total marketing spend divided by actual new customers. This shifts focus from lead volume to profitable growth and true campaign effectiveness.

For campaigns where the Meta Pixel is unusable (e.g., driving traffic to Amazon stores or podcast pages), new "Landing Page View Optimization" provides a more reliable success signal than a simple click. It confirms the page actually loaded, resulting in a reported 31% cost reduction by targeting more qualified users.

LinkedIn's ad algorithm heavily rewards engagement, creating a direct inverse correlation between Click-Through Rate (CTR) and Cost-Per-Click (CPC). A tangible goal is that doubling your CTR through better creative can effectively give you a 50% discount on your ad spend.

For products with a longer consideration cycle and higher price, optimizing every ad for immediate conversion (CPA) is a mistake. Top-of-funnel educational creative should be evaluated on metrics like cost per new visitor to ensure you're effectively feeding the funnel with fresh, qualified traffic.